{
 "name": "The Phone Path headphone and source database",
 "url": "https://thephonepath.com/data/",
 "licence": "CC BY 4.0",
 "licence_url": "https://creativecommons.org/licenses/by/4.0/",
 "attribution": "The Phone Path — thephonepath.com",
 "note": "Sensitivity is stored in dB/mW. Where a manufacturer published it per volt it was converted with dB/mW = dB/V - 10*log10(1000/Z); the published value and unit are kept alongside so the conversion can be checked or undone. Amplifier power at loads the maker did not publish is derived by holding output voltage constant between and beyond the published loads, which understates rather than flatters. The basis column says which is which for every figure.",
 "headphones": 578,
 "sources": 280,
 "data": [
  {
   "name": "EarStudio ES100 MK2",
   "type": "bt",
   "tier": "budget",
   "price_usd": 90,
   "power_mw_32_ohm": 60,
   "basis_32_ohm": "unverified",
   "power_mw_150_ohm": 20,
   "basis_150_ohm": "unverified",
   "power_mw_300_ohm": 10,
   "basis_300_ohm": "unverified",
   "power_mw_600_ohm": 5,
   "basis_600_ohm": "unverified",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": 3,
   "rated_output": "",
   "published_points": "",
   "confidence": "legacy",
   "source_url": "",
   "page": "https://thephonepath.com/sources/earstudio-es100-mk2/"
  },
  {
   "name": "FiiO BTR11",
   "type": "bt",
   "tier": "budget",
   "price_usd": 36,
   "power_mw_32_ohm": 30.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 6.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 3.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 1.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": 8.0,
   "rated_output": "se",
   "published_points": "16ohm=45mW; 32ohm=30mW; 300ohm=3mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/btr11_parameters",
   "page": "https://thephonepath.com/sources/fiio-btr11/"
  },
  {
   "name": "FiiO BTR13",
   "type": "bt",
   "tier": "budget",
   "price_usd": 59,
   "power_mw_32_ohm": 100.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 20.7,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 10.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 5.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": 1.0,
   "rated_output": "se",
   "published_points": "16ohm=120mW; 32ohm=100mW; 300ohm=10mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/BTR13_parameters",
   "page": "https://thephonepath.com/sources/fiio-btr13/"
  },
  {
   "name": "FiiO BTR15",
   "type": "bt",
   "tier": "budget",
   "price_usd": 109,
   "power_mw_32_ohm": 125.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 28.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 15.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 7.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 2.0,
   "rated_output": "se",
   "published_points": "16ohm=165mW; 32ohm=125mW; 300ohm=15mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/BTR15_parameters",
   "page": "https://thephonepath.com/sources/fiio-btr15/"
  },
  {
   "name": "FiiO BTR17",
   "type": "bt",
   "tier": "midfi",
   "price_usd": 199,
   "power_mw_32_ohm": 280.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 59.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 30.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 15.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 3.0,
   "rated_output": "se",
   "published_points": "16ohm=330mW; 32ohm=280mW; 300ohm=30mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/BTR17_parameters",
   "page": "https://thephonepath.com/sources/fiio-btr17/"
  },
  {
   "name": "FiiO BTR5 2021",
   "type": "bt",
   "tier": "budget",
   "price_usd": 109,
   "power_mw_32_ohm": 80.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 17.1,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 8.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 4.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 2.0,
   "rated_output": "se",
   "published_points": "16ohm=90mW; 32ohm=80mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/btr52021_parameters",
   "page": "https://thephonepath.com/sources/fiio-btr5-2021/"
  },
  {
   "name": "FiiO BTR7",
   "type": "bt",
   "tier": "midfi",
   "price_usd": 199,
   "power_mw_32_ohm": 160.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 34.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 18.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 9.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.2,
   "output_noise_uv": 3.0,
   "rated_output": "se",
   "published_points": "16ohm=165mW; 32ohm=160mW; 300ohm=18mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/BTR7_parameters",
   "page": "https://thephonepath.com/sources/fiio-btr7/"
  },
  {
   "name": "Fosi Audio N3",
   "type": "bt",
   "tier": "budget",
   "price_usd": 50,
   "power_mw_32_ohm": 138.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 29.7,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 15.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 7.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=138mW; 300ohm=15mW",
   "confidence": "medium",
   "source_url": "https://fosiaudio.com/products/fosi-audio-n3-portable-bluetooth-headphone-amplifier-receiver",
   "page": "https://thephonepath.com/sources/fosi-audio-n3/"
  },
  {
   "name": "HiBy W5",
   "type": "bt",
   "tier": "budget",
   "price_usd": 109,
   "power_mw_32_ohm": 80.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 17.1,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 8.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 4.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=80mW",
   "confidence": "medium",
   "source_url": "https://store.hiby.com/products/hiby-w5",
   "page": "https://thephonepath.com/sources/hiby-w5/"
  },
  {
   "name": "iFi GO blu",
   "type": "bt",
   "tier": "midfi",
   "price_usd": 219,
   "power_mw_32_ohm": 165.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 35.2,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 17.6,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 8.8,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=165mW",
   "confidence": "high",
   "source_url": "https://doc.av-connection.com/Products/Ifi/iFi-GO-blu-Manual.pdf",
   "page": "https://thephonepath.com/sources/ifi-go-blu/"
  },
  {
   "name": "Qudelix 5K",
   "type": "bt",
   "tier": "budget",
   "price_usd": 109,
   "power_mw_32_ohm": 125.0,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 26.7,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 13.3,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 6.7,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 0.4,
   "output_noise_uv": 3,
   "rated_output": "se",
   "published_points": "",
   "confidence": "high",
   "source_url": "https://www.qudelix.com/products/qudelix-5k",
   "page": "https://thephonepath.com/sources/qudelix-5k/"
  },
  {
   "name": "Shanling UP5",
   "type": "bt",
   "tier": "budget",
   "price_usd": 179,
   "power_mw_32_ohm": 112.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 23.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 11.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 6.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": 4,
   "rated_output": "se",
   "published_points": "32ohm=112mW",
   "confidence": "medium",
   "source_url": "https://en.shanling.com/article/101306",
   "page": "https://thephonepath.com/sources/shanling-up5/"
  },
  {
   "name": "Shanling UP6",
   "type": "bt",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 626.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 133.5,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 66.8,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 33.4,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "32ohm=626mW",
   "confidence": "medium",
   "source_url": "https://en.shanling.com/article/101230",
   "page": "https://thephonepath.com/sources/shanling-up6/"
  },
  {
   "name": "Aiyima A2 Pro",
   "type": "combo",
   "tier": "budget",
   "price_usd": 75,
   "power_mw_32_ohm": 150.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 32.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 16.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 8.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=150mW",
   "confidence": "medium",
   "source_url": "https://www.aiyima.com/products/aiyima-dac-a2-pro",
   "page": "https://thephonepath.com/sources/aiyima-a2-pro/"
  },
  {
   "name": "Aune X1s GT",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 319,
   "power_mw_32_ohm": 320.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 68.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 34.1,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 17.1,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=320mW",
   "confidence": "medium",
   "source_url": "https://en.auneaudio.com/product/X1sGT",
   "page": "https://thephonepath.com/sources/aune-x1s-gt/"
  },
  {
   "name": "Benchmark DAC3 HGC",
   "type": "combo",
   "tier": "highend",
   "price_usd": 2399,
   "power_mw_32_ohm": 1171.9,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 250.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 125.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 62.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.11,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=1250mW",
   "confidence": "medium",
   "source_url": "https://benchmarkmedia.com/products/benchmark-dac3-hgc-digital-to-analog-audio-converter",
   "page": "https://thephonepath.com/sources/benchmark-dac3-hgc/"
  },
  {
   "name": "Cambridge Audio DacMagic 200M",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 399,
   "power_mw_32_ohm": 300.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 65.0,
   "basis_150_ohm": "published",
   "power_mw_300_ohm": 32.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 16.2,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=300mW; 150ohm=65mW",
   "confidence": "medium",
   "source_url": "https://www.cambridgeaudio.com/usa/en/products/hi-fi/dacmagic/dacmagic-200m",
   "page": "https://thephonepath.com/sources/cambridge-audio-dacmagic-200m/"
  },
  {
   "name": "Chord Hugo TT 2",
   "type": "combo",
   "tier": "highend",
   "price_usd": 5695,
   "power_mw_32_ohm": 1890.5,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 475.6,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 288.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 144.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.042,
   "output_noise_uv": 1.7,
   "rated_output": "se",
   "published_points": "8ohm=7300mW; 300ohm=288mW",
   "confidence": "medium",
   "source_url": "https://chordelectronics.co.uk/product/hugott2",
   "page": "https://thephonepath.com/sources/chord-hugo-tt-2/"
  },
  {
   "name": "Creative Sound Blaster X3",
   "type": "combo",
   "tier": "budget",
   "price_usd": 100,
   "power_mw_32_ohm": 45.0,
   "basis_32_ohm": "recomputed",
   "power_mw_150_ohm": 35.3,
   "basis_150_ohm": "recomputed",
   "power_mw_300_ohm": 20.8,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 14.0,
   "basis_600_ohm": "recomputed",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=45mW; 150ohm=35.3mW; 600ohm=14mW",
   "confidence": "medium",
   "source_url": "https://us.creative.com/p/sound-blaster/sound-blaster-x3",
   "page": "https://thephonepath.com/sources/creative-sound-blaster-x3/"
  },
  {
   "name": "Creative Sound Blaster X5",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 285,
   "power_mw_32_ohm": 64.4,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 112.0,
   "basis_150_ohm": "published",
   "power_mw_300_ohm": 57.0,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 29.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=60mW; 33ohm=65mW; 150ohm=112mW; 330ohm=52mW; 600ohm=29mW",
   "confidence": "medium",
   "source_url": "https://us.creative.com/p/sound-blaster/sound-blaster-x5",
   "page": "https://thephonepath.com/sources/creative-sound-blaster-x5/"
  },
  {
   "name": "Ferrum ERCO",
   "type": "combo",
   "tier": "highend",
   "price_usd": 2050,
   "power_mw_32_ohm": 1088.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 579.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 300.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 150.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.3,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "50ohm=1700mW; 300ohm=300mW",
   "confidence": "medium",
   "source_url": "https://ferrum.audio/erco/",
   "page": "https://thephonepath.com/sources/ferrum-erco/"
  },
  {
   "name": "FiiO K11",
   "type": "combo",
   "tier": "budget",
   "price_usd": 143,
   "power_mw_32_ohm": 520.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 114.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 60.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 30.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.2,
   "output_noise_uv": 2.8,
   "rated_output": "se",
   "published_points": "16ohm=720mW; 32ohm=520mW; 300ohm=60mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/k11",
   "page": "https://thephonepath.com/sources/fiio-k11/"
  },
  {
   "name": "FiiO K11 R2R",
   "type": "combo",
   "tier": "budget",
   "price_usd": 176,
   "power_mw_32_ohm": 460.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 99.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 50.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 25.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 7.2,
   "rated_output": "se",
   "published_points": "16ohm=660mW; 32ohm=460mW; 300ohm=50mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/k11r2r",
   "page": "https://thephonepath.com/sources/fiio-k11-r2r/"
  },
  {
   "name": "FiiO K17",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 990,
   "power_mw_32_ohm": 1850.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 431.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 240.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 120.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 5.0,
   "rated_output": "se",
   "published_points": "16ohm=1800mW; 32ohm=1850mW; 300ohm=240mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/k17",
   "page": "https://thephonepath.com/sources/fiio-k17/"
  },
  {
   "name": "FiiO K19",
   "type": "combo",
   "tier": "highend",
   "price_usd": 1430,
   "power_mw_32_ohm": 2300.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 512.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 270.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 135.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": 3.5,
   "rated_output": "se",
   "published_points": "16ohm=4000mW; 32ohm=2300mW; 300ohm=270mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/k19",
   "page": "https://thephonepath.com/sources/fiio-k19/"
  },
  {
   "name": "FiiO K7",
   "type": "combo",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 1220.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 268.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 140.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 70.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 3.1,
   "rated_output": "se",
   "published_points": "32ohm=1220mW; 300ohm=140mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/k7_parameters",
   "page": "https://thephonepath.com/sources/fiio-k7/"
  },
  {
   "name": "FiiO K9 Pro",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 799,
   "power_mw_32_ohm": 2000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 481.5,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 278.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 139.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 2.0,
   "rated_output": "se",
   "published_points": "16ohm=1100mW; 32ohm=2000mW; 300ohm=278mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/k9pro_parameters",
   "page": "https://thephonepath.com/sources/fiio-k9-pro/"
  },
  {
   "name": "Fosi Audio K7",
   "type": "combo",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 600.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 128.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 64.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 32.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": 2.5,
   "rated_output": "se",
   "published_points": "32ohm=600mW",
   "confidence": "medium",
   "source_url": "https://fosiaudio.com/pages/fosi-audio-k7-dac-amp",
   "page": "https://thephonepath.com/sources/fosi-audio-k7/"
  },
  {
   "name": "HiFiMAN EF500",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 459,
   "power_mw_32_ohm": 1320.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 281.6,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 140.8,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 70.4,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=1320mW",
   "confidence": "medium",
   "source_url": "https://www.hifiman.com/products/detail/345",
   "page": "https://thephonepath.com/sources/hifiman-ef500/"
  },
  {
   "name": "HiFiMAN EF600",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 799,
   "power_mw_32_ohm": 1800.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 384.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 192.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 96.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=1800mW",
   "confidence": "medium",
   "source_url": "https://hifiman.com/attachments/file/20230324/20230324090036_44071.pdf",
   "page": "https://thephonepath.com/sources/hifiman-ef600/"
  },
  {
   "name": "iFi Zen DAC 3",
   "type": "combo",
   "tier": "budget",
   "price_usd": 229,
   "power_mw_32_ohm": 210.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 49.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 28.4,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 18.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=210mW; 600ohm=18mW",
   "confidence": "high",
   "source_url": "https://downloads.ifi-audio.com/wp-content/uploads/2024/04/ZEN-DAC-3-User-Manual_Ver1.0-1.pdf",
   "page": "https://thephonepath.com/sources/ifi-zen-dac-3/"
  },
  {
   "name": "JDS Labs Element III MK2",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 449,
   "power_mw_32_ohm": 2300.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 584.0,
   "basis_150_ohm": "published",
   "power_mw_300_ohm": 292.0,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 146.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.7,
   "output_noise_uv": 2.51,
   "rated_output": "se",
   "published_points": "32ohm=2300mW; 150ohm=584mW; 600ohm=146mW",
   "confidence": "high",
   "source_url": "https://jdslabs.com/product/element-iii/",
   "page": "https://thephonepath.com/sources/jds-labs-element-iii-mk2/"
  },
  {
   "name": "JDS Labs Element IV",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 549,
   "power_mw_32_ohm": 3200.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 692.0,
   "basis_150_ohm": "published",
   "power_mw_300_ohm": 346.7,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 174.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 1,
   "output_noise_uv": 2,
   "rated_output": "se",
   "published_points": "32ohm=3200mW; 150ohm=692mW; 600ohm=174mW",
   "confidence": "high",
   "source_url": "https://blog.jdslabs.com/2024/11/introducing-element-iv-and-core/",
   "page": "https://thephonepath.com/sources/jds-labs-element-iv/"
  },
  {
   "name": "Loxjie A30",
   "type": "combo",
   "tier": "budget",
   "price_usd": 170,
   "power_mw_32_ohm": 100.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 21.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 10.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 5.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=100mW",
   "confidence": "medium",
   "source_url": "https://sabaj.com.cn/pages/manual-download",
   "page": "https://thephonepath.com/sources/loxjie-a30/"
  },
  {
   "name": "Marantz SACD 30n",
   "type": "combo",
   "tier": "highend",
   "price_usd": 3500,
   "power_mw_32_ohm": 50.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 10.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 5.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 2.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=50mW",
   "confidence": "medium",
   "source_url": "https://manuals.marantz.com/sacd30n/EU/EN/OBAOSYsgsfjuue.php",
   "page": "https://thephonepath.com/sources/marantz-sacd-30n/"
  },
  {
   "name": "Matrix element M2",
   "type": "combo",
   "tier": "highend",
   "price_usd": 2999,
   "power_mw_32_ohm": 1163.6,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 380.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 280.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 140.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 11,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=1200mW; 300ohm=280mW; 600ohm=140mW",
   "confidence": "medium",
   "source_url": "https://www.matrix-digi.com/product/10/element_M2",
   "page": "https://thephonepath.com/sources/matrix-element-m2/"
  },
  {
   "name": "Matrix mini-i Pro 4",
   "type": "combo",
   "tier": "highend",
   "price_usd": 1499,
   "power_mw_32_ohm": 1163.6,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 365.6,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 260.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 130.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 11,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=1200mW; 300ohm=260mW; 600ohm=130mW",
   "confidence": "medium",
   "source_url": "https://www.matrix-digi.com/product/94/mini-i_Pro_4",
   "page": "https://thephonepath.com/sources/matrix-mini-i-pro-4/"
  },
  {
   "name": "Naim Uniti Atom Headphone Edition",
   "type": "combo",
   "tier": "highend",
   "price_usd": 3799,
   "power_mw_32_ohm": 750.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 160.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 80.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 40.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=1500mW",
   "confidence": "medium",
   "source_url": "https://www.naimaudio.com/products/uniti-atom-headphone-edition",
   "page": "https://thephonepath.com/sources/naim-uniti-atom-headphone-edition/"
  },
  {
   "name": "Questyle CMA Fifteen",
   "type": "combo",
   "tier": "highend",
   "price_usd": 2499,
   "power_mw_32_ohm": 1500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 344.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 188.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 94.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=1500mW; 300ohm=188mW",
   "confidence": "medium",
   "source_url": "https://questyleshop.com/pages/cma-fifteen-specification",
   "page": "https://thephonepath.com/sources/questyle-cma-fifteen/"
  },
  {
   "name": "Questyle CMA18 Master",
   "type": "combo",
   "tier": "highend",
   "price_usd": 1999,
   "power_mw_32_ohm": 1500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 344.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 188.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 94.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=1500mW; 300ohm=188mW",
   "confidence": "medium",
   "source_url": "https://www.questyle.com/products/questyle-cma-18-master",
   "page": "https://thephonepath.com/sources/questyle-cma18-master/"
  },
  {
   "name": "RME ADI-2/4 Pro SE",
   "type": "combo",
   "tier": "highend",
   "price_usd": 2499,
   "power_mw_32_ohm": 1900.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 405.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 202.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 101.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 1.09,
   "rated_output": "se",
   "published_points": "32ohm=1900mW",
   "confidence": "medium",
   "source_url": "https://www.rme-audio.de/adi-2-4-pro-se.html",
   "page": "https://thephonepath.com/sources/rme-adi-2-4-pro-se/"
  },
  {
   "name": "SMSL C200",
   "type": "combo",
   "tier": "budget",
   "price_usd": 219,
   "power_mw_32_ohm": 1300.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 277.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 138.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 69.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "16ohm=2600mW; 32ohm=1300mW",
   "confidence": "medium",
   "source_url": "https://www.smsl-audio.com/portal/product/detail/id/799.html",
   "page": "https://thephonepath.com/sources/smsl-c200/"
  },
  {
   "name": "SMSL DO400",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 520,
   "power_mw_32_ohm": 3000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 938.4,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 700.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 350.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0,
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "16ohm=6000mW; 32ohm=3000mW; 300ohm=700mW; 600ohm=350mW",
   "confidence": "medium",
   "source_url": "https://www.smsl-audio.com/upload/portal/download/DO400Manual.pdf",
   "page": "https://thephonepath.com/sources/smsl-do400/"
  },
  {
   "name": "Topping DX5",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 449,
   "power_mw_32_ohm": 1800.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 433.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 250.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 125.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "32ohm=1800mW; 300ohm=250mW",
   "confidence": "low",
   "source_url": "https://apos.audio/products/topping-dx5-dac-amp",
   "page": "https://thephonepath.com/sources/topping-dx5/"
  },
  {
   "name": "Violectric V226",
   "type": "combo",
   "tier": "highend",
   "price_usd": 1600,
   "power_mw_32_ohm": 2200.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 2624.4,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 1800.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 900.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.25,
   "output_noise_uv": 6.15,
   "rated_output": "se",
   "published_points": "16ohm=1500mW; 32ohm=2200mW; 50ohm=2800mW; 100ohm=3500mW; 300ohm=1800mW; 600ohm=900mW",
   "confidence": "medium",
   "source_url": "https://www.violectric.de/media/pdf/d1/b3/e7/Violectric_DHA_V226_TechGuide_EN_2021_07.pdf",
   "page": "https://thephonepath.com/sources/violectric-v226/"
  },
  {
   "name": "WiiM Ultra",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 349,
   "power_mw_32_ohm": 150.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 22.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 6.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 3.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=150mW; 300ohm=6mW",
   "confidence": "medium",
   "source_url": "https://www.wiimhome.com/wiimultra/overview",
   "page": "https://thephonepath.com/sources/wiim-ultra/"
  },
  {
   "name": "xDuoo XA-10",
   "type": "combo",
   "tier": "midfi",
   "price_usd": 449,
   "power_mw_32_ohm": 3000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 640.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 320.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 160.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=3000mW",
   "confidence": "medium",
   "source_url": "https://www.xduoo.com/product/xa-10/",
   "page": "https://thephonepath.com/sources/xduoo-xa-10/"
  },
  {
   "name": "Astell&Kern SP3000",
   "type": "dap",
   "tier": "highend",
   "price_usd": 3700,
   "power_mw_32_ohm": 340.3,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 72.6,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 36.3,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 18.1,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 0.7,
   "output_noise_uv": 3,
   "rated_output": "se",
   "published_points": "",
   "confidence": "high",
   "source_url": "https://www.astellnkern.com/en/product/view.php?idx=133",
   "page": "https://thephonepath.com/sources/astellandkern-sp3000/"
  },
  {
   "name": "Astell&Kern SR35",
   "type": "dap",
   "tier": "highend",
   "price_usd": 800,
   "power_mw_32_ohm": 300.3,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 64.1,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 32.0,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 16.0,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 1.1,
   "output_noise_uv": 4,
   "rated_output": "se",
   "published_points": "",
   "confidence": "high",
   "source_url": "https://www.astellnkern.com/en/product/view.php?idx=138",
   "page": "https://thephonepath.com/sources/astellandkern-sr35/"
  },
  {
   "name": "Cayin N3 Ultra",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 649,
   "power_mw_32_ohm": 250.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 53.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 26.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 13.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=250mW; 32ohm=250mW",
   "confidence": "medium",
   "source_url": "https://cayin.com/ca-inhalte/uploads/2024/09/N3-Ultra-Digitaler-Audio-Player_deutsch.pdf",
   "page": "https://thephonepath.com/sources/cayin-n3-ultra/"
  },
  {
   "name": "Cayin N7",
   "type": "dap",
   "tier": "highend",
   "price_usd": 1999,
   "power_mw_32_ohm": 250.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 53.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 26.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 13.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=250mW",
   "confidence": "medium",
   "source_url": "https://en.cayin.cn/parameter/7/15/592.html",
   "page": "https://thephonepath.com/sources/cayin-n7/"
  },
  {
   "name": "FiiO JM21",
   "type": "dap",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 245.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 55.6,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 30.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 15.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1,
   "output_noise_uv": 1.6,
   "rated_output": "se",
   "published_points": "16ohm=360mW; 32ohm=245mW; 300ohm=30mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/jm21_parameters",
   "page": "https://thephonepath.com/sources/fiio-jm21/"
  },
  {
   "name": "FiiO M11S",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 499,
   "power_mw_32_ohm": 200.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 44.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 23.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 11.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.5,
   "output_noise_uv": 1.8,
   "rated_output": "se",
   "published_points": "16ohm=300mW; 32ohm=200mW; 300ohm=23mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/M11S_parameters",
   "page": "https://thephonepath.com/sources/fiio-m11s/"
  },
  {
   "name": "FiiO M15S",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 799,
   "power_mw_32_ohm": 580.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 149.6,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 93.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 46.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.4,
   "output_noise_uv": 3.2,
   "rated_output": "se",
   "published_points": "16ohm=535mW; 32ohm=580mW; 300ohm=93mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/m15s_parameters",
   "page": "https://thephonepath.com/sources/fiio-m15s/"
  },
  {
   "name": "FiiO M17",
   "type": "dap",
   "tier": "highend",
   "price_usd": 1799,
   "power_mw_32_ohm": 500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 115.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 63.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 31.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1,
   "output_noise_uv": 3.5,
   "rated_output": "se",
   "published_points": "16ohm=740mW; 32ohm=500mW; 300ohm=63mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/M17_parameters",
   "page": "https://thephonepath.com/sources/fiio-m17/"
  },
  {
   "name": "FiiO M21",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 599,
   "power_mw_32_ohm": 405.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 88.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 45.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 22.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 2.0,
   "rated_output": "se",
   "published_points": "16ohm=480mW; 32ohm=405mW; 300ohm=45mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/m21_parameters",
   "page": "https://thephonepath.com/sources/fiio-m21/"
  },
  {
   "name": "FiiO M23",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 699,
   "power_mw_32_ohm": 125.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 28.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 15.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 7.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1,
   "output_noise_uv": 1.9,
   "rated_output": "se",
   "published_points": "16ohm=235mW; 32ohm=125mW; 300ohm=15mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/m23_parameters",
   "page": "https://thephonepath.com/sources/fiio-m23/"
  },
  {
   "name": "FiiO M27",
   "type": "dap",
   "tier": "highend",
   "price_usd": 1799,
   "power_mw_32_ohm": 1800.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 391.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 200.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 100.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": 3.9,
   "rated_output": "se",
   "published_points": "16ohm=2650mW; 32ohm=1800mW; 300ohm=200mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/m27_parameters",
   "page": "https://thephonepath.com/sources/fiio-m27/"
  },
  {
   "name": "FiiO M33 R2R",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 730,
   "power_mw_32_ohm": 470.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 108.7,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 60.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 30.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.8,
   "output_noise_uv": 5.5,
   "rated_output": "se",
   "published_points": "16ohm=540mW; 32ohm=470mW; 300ohm=60mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/M33R2R_parameters",
   "page": "https://thephonepath.com/sources/fiio-m33-r2r/"
  },
  {
   "name": "HiBy R6 Pro II",
   "type": "dap",
   "tier": "highend",
   "price_usd": 750,
   "power_mw_32_ohm": 750,
   "basis_32_ohm": "unverified",
   "power_mw_150_ohm": 280,
   "basis_150_ohm": "unverified",
   "power_mw_300_ohm": 140,
   "basis_300_ohm": "unverified",
   "power_mw_600_ohm": 70,
   "basis_600_ohm": "unverified",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": 4,
   "rated_output": "",
   "published_points": "",
   "confidence": "legacy",
   "source_url": "",
   "page": "https://thephonepath.com/sources/hiby-r6-pro-ii/"
  },
  {
   "name": "HiBy R8 II",
   "type": "dap",
   "tier": "highend",
   "price_usd": 1999,
   "power_mw_32_ohm": 225.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 48.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 24.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 12.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1,
   "output_noise_uv": 3.2,
   "rated_output": "se",
   "published_points": "32ohm=225mW",
   "confidence": "medium",
   "source_url": "https://store.hiby.com/products/hiby-r8-ii",
   "page": "https://thephonepath.com/sources/hiby-r8-ii/"
  },
  {
   "name": "HiBy RS6",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 999,
   "power_mw_32_ohm": 180.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 38.4,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 19.2,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 9.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.4,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=180mW",
   "confidence": "medium",
   "source_url": "https://store.hiby.com/products/hiby-rs6",
   "page": "https://thephonepath.com/sources/hiby-rs6/"
  },
  {
   "name": "Hidizs AP80 Pro Max",
   "type": "dap",
   "tier": "budget",
   "price_usd": 179,
   "power_mw_32_ohm": 70.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 14.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 7.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 3.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=70mW",
   "confidence": "medium",
   "source_url": "https://www.hidizs.net/products/hidizs-ap80-pro-max-all-in-one-hi-res-streaming-music-player",
   "page": "https://thephonepath.com/sources/hidizs-ap80-pro-max/"
  },
  {
   "name": "Hidizs AP80 Pro-X",
   "type": "dap",
   "tier": "budget",
   "price_usd": 189,
   "power_mw_32_ohm": 70.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 14.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 7.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 3.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=70mW",
   "confidence": "medium",
   "source_url": "https://www.hidizs.net/pages/ap80pro-x-specifications",
   "page": "https://thephonepath.com/sources/hidizs-ap80-pro-x/"
  },
  {
   "name": "iBasso DX180",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 480,
   "power_mw_32_ohm": 262.5,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 56.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 28.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 14.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=525mW",
   "confidence": "high",
   "source_url": "https://www.ibasso.com/uploadfiles/download/DX180userguide.pdf",
   "page": "https://thephonepath.com/sources/ibasso-dx180/"
  },
  {
   "name": "iBasso DX260",
   "type": "dap",
   "tier": "highend",
   "price_usd": 949,
   "power_mw_32_ohm": 262.5,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 56.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 28.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 14.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=525mW",
   "confidence": "high",
   "source_url": "https://ibasso.com/uploadfiles/download/DX260userguide.pdf",
   "page": "https://thephonepath.com/sources/ibasso-dx260/"
  },
  {
   "name": "iBasso DX260 MK2",
   "type": "dap",
   "tier": "highend",
   "price_usd": 949,
   "power_mw_32_ohm": 262.5,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 56.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 28.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 14.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": 1.0,
   "rated_output": "se",
   "published_points": "16ohm=525mW",
   "confidence": "high",
   "source_url": "https://ibasso.com/uploadfiles/download/DX260MK2usermanual.pdf",
   "page": "https://thephonepath.com/sources/ibasso-dx260-mk2/"
  },
  {
   "name": "iBasso DX270",
   "type": "dap",
   "tier": "highend",
   "price_usd": 1149,
   "power_mw_32_ohm": 416.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 88.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 44.4,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 22.2,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=416mW",
   "confidence": "high",
   "source_url": "https://ibasso.com/uploadfiles/download/DX270UserManual.pdf",
   "page": "https://thephonepath.com/sources/ibasso-dx270/"
  },
  {
   "name": "iBasso DX320",
   "type": "dap",
   "tier": "highend",
   "price_usd": 1599,
   "power_mw_32_ohm": 380.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 80.6,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 40.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 20.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.34,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=380mW; 300ohm=40mW",
   "confidence": "medium",
   "source_url": "https://www.ibasso.com/uploadfiles/download/DX320usermanual.pdf",
   "page": "https://thephonepath.com/sources/ibasso-dx320/"
  },
  {
   "name": "iBasso DX340",
   "type": "dap",
   "tier": "highend",
   "price_usd": 1699,
   "power_mw_32_ohm": 550.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 117.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 58.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 29.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=550mW",
   "confidence": "medium",
   "source_url": "https://ibasso.com/uploadfiles/download/DX340userguide.pdf",
   "page": "https://thephonepath.com/sources/ibasso-dx340/"
  },
  {
   "name": "Lotoo PAW 6000",
   "type": "dap",
   "tier": "highend",
   "price_usd": 1200,
   "power_mw_32_ohm": 300.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 64.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 32.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 16.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": 0.975,
   "rated_output": "se",
   "published_points": "32ohm=300mW",
   "confidence": "medium",
   "source_url": "http://www.lotoo.cn/english/Hi_Fi_Player/PAW_6000/Specs/",
   "page": "https://thephonepath.com/sources/lotoo-paw-6000/"
  },
  {
   "name": "Luxury & Precision P6 Pro",
   "type": "dap",
   "tier": "highend",
   "price_usd": 3899,
   "power_mw_32_ohm": 180.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 39.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 20.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 10.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.2,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=330mW; 32ohm=180mW; 300ohm=20mW",
   "confidence": "medium",
   "source_url": "http://www.luxuryprecision.net/shangpin/bofangqi/2021-01-13/38.html",
   "page": "https://thephonepath.com/sources/luxury-and-precision-p6-pro/"
  },
  {
   "name": "Moondrop DISCDREAM2 ULTRA",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 350,
   "power_mw_32_ohm": 112.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 23.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 11.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 6.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=112mW",
   "confidence": "medium",
   "source_url": "https://moondroplab.com/en/products/discdream2-ultra",
   "page": "https://thephonepath.com/sources/moondrop-discdream2-ultra/"
  },
  {
   "name": "Shanling H5",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 369,
   "power_mw_32_ohm": 227.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 48.4,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 24.2,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 12.1,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 4.7,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=227mW",
   "confidence": "medium",
   "source_url": "https://en.shanling.com/article/101269",
   "page": "https://thephonepath.com/sources/shanling-h5/"
  },
  {
   "name": "Shanling M1 Plus",
   "type": "dap",
   "tier": "budget",
   "price_usd": 209,
   "power_mw_32_ohm": 195.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 41.6,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 20.8,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 10.4,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=195mW",
   "confidence": "high",
   "source_url": "https://en.shanling.com/article-IntroM1Plus.html",
   "page": "https://thephonepath.com/sources/shanling-m1-plus/"
  },
  {
   "name": "Shanling M3 Ultra",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 479,
   "power_mw_32_ohm": 140.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 29.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 14.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 7.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=140mW",
   "confidence": "high",
   "source_url": "https://en.shanling.com/article-IntroM3U.html",
   "page": "https://thephonepath.com/sources/shanling-m3-ultra/"
  },
  {
   "name": "Shanling M6 Ultra",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 919,
   "power_mw_32_ohm": 240.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 51.2,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 25.6,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 12.8,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=240mW",
   "confidence": "medium",
   "source_url": "https://en.shanling.com/article/101283",
   "page": "https://thephonepath.com/sources/shanling-m6-ultra/"
  },
  {
   "name": "Shanling M7",
   "type": "dap",
   "tier": "highend",
   "price_usd": 1249,
   "power_mw_32_ohm": 406.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 86.6,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 43.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 21.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 1.6,
   "rated_output": "se",
   "published_points": "32ohm=406mW",
   "confidence": "medium",
   "source_url": "https://en.shanling.com/article/101289",
   "page": "https://thephonepath.com/sources/shanling-m7/"
  },
  {
   "name": "Shanling M9 Plus",
   "type": "dap",
   "tier": "highend",
   "price_usd": 2959,
   "power_mw_32_ohm": 520.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 110.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 55.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 27.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=520mW",
   "confidence": "high",
   "source_url": "https://en.shanling.com/article-IntroM9Plus.html",
   "page": "https://thephonepath.com/sources/shanling-m9-plus/"
  },
  {
   "name": "Sony NW-A306",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 350,
   "power_mw_32_ohm": 17.5,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 3.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 1.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 0.9,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.5,
   "output_noise_uv": 5,
   "rated_output": "se",
   "published_points": "16ohm=35mW",
   "confidence": "medium",
   "source_url": "https://www.sony-asia.com/electronics/support/digital-music-players-nw-nwz-a-series/nw-a306/specifications",
   "page": "https://thephonepath.com/sources/sony-nw-a306/"
  },
  {
   "name": "Sony NW-WM1AM2",
   "type": "dap",
   "tier": "highend",
   "price_usd": 1399,
   "power_mw_32_ohm": 30.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 6.4,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 3.2,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 1.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1,
   "output_noise_uv": 3,
   "rated_output": "se",
   "published_points": "16ohm=60mW",
   "confidence": "medium",
   "source_url": "https://www.sony-asia.com/electronics/support/digital-music-players-nw-wm-series/nw-wm1am2/specifications",
   "page": "https://thephonepath.com/sources/sony-nw-wm1am2/"
  },
  {
   "name": "Sony NW-WM1ZM2",
   "type": "dap",
   "tier": "highend",
   "price_usd": 3700,
   "power_mw_32_ohm": 30.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 6.4,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 3.2,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 1.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=60mW",
   "confidence": "medium",
   "source_url": "https://www.sony-mea.com/en/electronics/support/digital-music-players-nw-wm-series/nw-wm1zm2/specifications",
   "page": "https://thephonepath.com/sources/sony-nw-wm1zm2/"
  },
  {
   "name": "Sony NW-ZX707",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 898,
   "power_mw_32_ohm": 25.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 5.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 2.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 1.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=50mW",
   "confidence": "medium",
   "source_url": "https://www.sony-asia.com/electronics/support/digital-music-players-nw-nwz-zx-series/nw-zx707/specifications",
   "page": "https://thephonepath.com/sources/sony-nw-zx707/"
  },
  {
   "name": "Surfans F28",
   "type": "dap",
   "tier": "budget",
   "price_usd": 180,
   "power_mw_32_ohm": 125.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 26.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 13.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 6.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=125mW",
   "confidence": "medium",
   "source_url": "https://www.surfans.net/products/surfans-f28",
   "page": "https://thephonepath.com/sources/surfans-f28/"
  },
  {
   "name": "TempoTec Variations V3 Blaze",
   "type": "dap",
   "tier": "budget",
   "price_usd": 179,
   "power_mw_32_ohm": 825.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 176.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 88.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 44.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "32ohm=825mW",
   "confidence": "medium",
   "source_url": "https://www.tempotec.net/products/tempotec-v3-blaze",
   "page": "https://thephonepath.com/sources/tempotec-variations-v3-blaze/"
  },
  {
   "name": "TempoTec Variations V6",
   "type": "dap",
   "tier": "midfi",
   "price_usd": 369,
   "power_mw_32_ohm": 330.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 70.4,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 35.2,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 17.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=330mW",
   "confidence": "medium",
   "source_url": "https://www.tempotec.net/pages/tempotec-v6-details",
   "page": "https://thephonepath.com/sources/tempotec-variations-v6/"
  },
  {
   "name": "ART HeadAmp 4 Pro",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 130,
   "power_mw_32_ohm": 98.2,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 66.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 33.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 16.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 47.0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=100mW; 100ohm=100mW",
   "confidence": "medium",
   "source_url": "https://artproaudio.com/imgs/file/Manuals/om-HeadAmp4Prp-v103-6-21-18.pdf",
   "page": "https://thephonepath.com/sources/art-headamp-4-pro/"
  },
  {
   "name": "Aune S17 Pro EVO",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 799,
   "power_mw_32_ohm": 2050.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 464.0,
   "basis_150_ohm": "published",
   "power_mw_300_ohm": 235.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 117.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=2050mW; 100ohm=688mW; 150ohm=464mW; 200ohm=348mW; 250ohm=282mW; 300ohm=235mW; 470ohm=150mW; 600ohm=117mW",
   "confidence": "medium",
   "source_url": "https://en.auneaudio.com/product/S17ProEVO",
   "page": "https://thephonepath.com/sources/aune-s17-pro-evo/"
  },
  {
   "name": "Benchmark HPA4",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 3499,
   "power_mw_32_ohm": 3354.0,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 829.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 440.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 220.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.0,
   "output_noise_uv": 2.45,
   "rated_output": "se",
   "published_points": "16ohm=6000mW; 45ohm=2600mW; 200ohm=640mW; 300ohm=440mW",
   "confidence": "medium",
   "source_url": "https://benchmarkmedia.com/products/hpa4",
   "page": "https://thephonepath.com/sources/benchmark-hpa4/"
  },
  {
   "name": "Bottlehead Crack (OTL kit)",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 375,
   "power_mw_32_ohm": 271.4,
   "basis_32_ohm": "source-impedance",
   "power_mw_150_ohm": 403.3,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 333.3,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 226.8,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 120.0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "300ohm=333.3mW",
   "confidence": "high",
   "source_url": "https://bottlehead.com/products/crack-1-1-otl-headphone-amplifier-kit",
   "page": "https://thephonepath.com/sources/bottlehead-crack-otl-kit/"
  },
  {
   "name": "Bryston BHA-1",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 2395,
   "power_mw_32_ohm": 500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 357.7,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 444.8,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 667.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=500mW; 600ohm=667mW",
   "confidence": "medium",
   "source_url": "https://bryston.com/wp-content/uploads/2020/06/BHA1_BROCHURE.pdf",
   "page": "https://thephonepath.com/sources/bryston-bha-1/"
  },
  {
   "name": "Burson Soloist 3X GT",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 2799,
   "power_mw_32_ohm": 4000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 650.0,
   "basis_150_ohm": "published",
   "power_mw_300_ohm": 320.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 160.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": 1.5,
   "rated_output": "se",
   "published_points": "16ohm=5000mW; 32ohm=4000mW; 100ohm=1900mW; 150ohm=650mW; 300ohm=320mW",
   "confidence": "medium",
   "source_url": "https://www.bursonaudio.com/products/soloist-3x-grand-tourer/",
   "page": "https://thephonepath.com/sources/burson-soloist-3x-gt/"
  },
  {
   "name": "Cayin HA-6A",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1800,
   "power_mw_32_ohm": 3000,
   "basis_32_ohm": "unverified",
   "power_mw_150_ohm": 1500,
   "basis_150_ohm": "unverified",
   "power_mw_300_ohm": 900,
   "basis_300_ohm": "unverified",
   "power_mw_600_ohm": 450,
   "basis_600_ohm": "unverified",
   "output_impedance_ohm": 2,
   "output_noise_uv": 25,
   "rated_output": "",
   "published_points": "",
   "confidence": "legacy",
   "source_url": "",
   "page": "https://thephonepath.com/sources/cayin-ha-6a/"
  },
  {
   "name": "Ferrum OOR",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1995,
   "power_mw_32_ohm": 1066.7,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 800.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 400.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 200.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.3,
   "output_noise_uv": 1.5,
   "rated_output": "se",
   "published_points": "60ohm=2000mW; 300ohm=400mW",
   "confidence": "high",
   "source_url": "https://ferrum.audio/oor/",
   "page": "https://thephonepath.com/sources/ferrum-oor/"
  },
  {
   "name": "Fosi Audio SK02",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 100,
   "power_mw_32_ohm": 190.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 40.5,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 20.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 10.1,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": 3.7,
   "rated_output": "se",
   "published_points": "32ohm=190mW",
   "confidence": "medium",
   "source_url": "https://fosiaudio.com/products/fosi-audio-sk02-desktop-dac-headphone-amp",
   "page": "https://thephonepath.com/sources/fosi-audio-sk02/"
  },
  {
   "name": "Geshelli Archel 3S Pro",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 370,
   "power_mw_32_ohm": 1000.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 213.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 106.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 53.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=2000mW",
   "confidence": "medium",
   "source_url": "https://geshelli.com/product/archel-3s-pro/",
   "page": "https://thephonepath.com/sources/geshelli-archel-3s-pro/"
  },
  {
   "name": "Geshelli Archel Pro",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 200,
   "power_mw_32_ohm": 1800,
   "basis_32_ohm": "unverified",
   "power_mw_150_ohm": 500,
   "basis_150_ohm": "unverified",
   "power_mw_300_ohm": 250,
   "basis_300_ohm": "unverified",
   "power_mw_600_ohm": 125,
   "basis_600_ohm": "unverified",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 1.5,
   "rated_output": "",
   "published_points": "",
   "confidence": "legacy",
   "source_url": "",
   "page": "https://thephonepath.com/sources/geshelli-archel-pro/"
  },
  {
   "name": "Grace Design m900",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 660,
   "power_mw_32_ohm": 1020.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 228.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 115.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 57.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.08,
   "output_noise_uv": 5.01,
   "rated_output": "se",
   "published_points": "16ohm=1900mW; 32ohm=1020mW; 50ohm=680mW; 300ohm=115mW; 600ohm=57mW",
   "confidence": "medium",
   "source_url": "https://gracedesign.com/products/monitor-controllers/m900/",
   "page": "https://thephonepath.com/sources/grace-design-m900/"
  },
  {
   "name": "Gustard H20",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 929,
   "power_mw_32_ohm": 12000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 2680.0,
   "basis_150_ohm": "published",
   "power_mw_300_ohm": 1340.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 670.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "32ohm=12000mW; 64ohm=5360mW; 150ohm=2680mW; 300ohm=1340mW; 600ohm=670mW",
   "confidence": "medium",
   "source_url": "https://www.gustard.com/?page_id=8958",
   "page": "https://thephonepath.com/sources/gustard-h20/"
  },
  {
   "name": "Gustard H26",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1099,
   "power_mw_32_ohm": 9700.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 2069.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 1034.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 517.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "32ohm=9700mW",
   "confidence": "medium",
   "source_url": "https://www.manualslib.com/manual/3686248/Gustard-H26.html",
   "page": "https://thephonepath.com/sources/gustard-h26/"
  },
  {
   "name": "Headamp GS-X Mini",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1795,
   "power_mw_32_ohm": 1275.6,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 333.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 166.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 83.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.05,
   "output_noise_uv": 1.5,
   "rated_output": "se",
   "published_points": "25ohm=1500mW; 50ohm=1000mW; 100ohm=500mW",
   "confidence": "high",
   "source_url": "https://headamp.com/products/gs-x-mini",
   "page": "https://thephonepath.com/sources/headamp-gs-x-mini/"
  },
  {
   "name": "HeadAmp GS-X mk2",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 2995,
   "power_mw_32_ohm": 7061.4,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 2000.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 1000.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 500.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "25ohm=8000mW; 50ohm=6000mW; 100ohm=3000mW",
   "confidence": "medium",
   "source_url": "https://www.headamp.com/products/gs-x-mk2",
   "page": "https://thephonepath.com/sources/headamp-gs-x-mk2/"
  },
  {
   "name": "Holo Audio Bliss KTE",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 3798,
   "power_mw_32_ohm": 3000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 600.0,
   "basis_150_ohm": "published",
   "power_mw_300_ohm": 300.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 150.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=3000mW; 150ohm=600mW",
   "confidence": "medium",
   "source_url": "https://kitsunehifi.com/pages/downloads",
   "page": "https://thephonepath.com/sources/holo-audio-bliss-kte/"
  },
  {
   "name": "iFi iCAN Pro",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 600,
   "power_mw_32_ohm": 4000,
   "basis_32_ohm": "unverified",
   "power_mw_150_ohm": 1200,
   "basis_150_ohm": "unverified",
   "power_mw_300_ohm": 600,
   "basis_300_ohm": "unverified",
   "power_mw_600_ohm": 300,
   "basis_600_ohm": "unverified",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": 25,
   "rated_output": "",
   "published_points": "",
   "confidence": "legacy",
   "source_url": "",
   "page": "https://thephonepath.com/sources/ifi-ican-pro/"
  },
  {
   "name": "iFi Pro iCAN Signature",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 2499,
   "power_mw_32_ohm": 2400.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 512.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 256.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 128.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=4800mW",
   "confidence": "high",
   "source_url": "https://downloads.ifi-audio.com/wp-content/uploads/2021/09/Pro-iCAN-Signature-User-Manual_Ver1.0_ok.pdf",
   "page": "https://thephonepath.com/sources/ifi-pro-ican-signature/"
  },
  {
   "name": "iFi Zen CAN",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 1600.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 374.5,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 190.1,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 98.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": 1.5,
   "rated_output": "se",
   "published_points": "32ohm=1600mW; 64ohm=870mW; 600ohm=98mW",
   "confidence": "high",
   "source_url": "https://downloads.ifi-audio.com/wp-content/uploads/2021/02/ZEN-CAN-User-Manual-Ver1.3-Ordinary-power-supply.pdf",
   "page": "https://thephonepath.com/sources/ifi-zen-can/"
  },
  {
   "name": "JDS Labs Atom Amp 2",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 129,
   "power_mw_32_ohm": 2650.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 566.7,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 284.2,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 143.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.7,
   "output_noise_uv": 1.33,
   "rated_output": "se",
   "published_points": "32ohm=2650mW; 600ohm=143mW",
   "confidence": "high",
   "source_url": "https://jdslabs.com/product/atom-amp-2/",
   "page": "https://thephonepath.com/sources/jds-labs-atom-amp-2/"
  },
  {
   "name": "JDS Labs Atom+ (2nd gen)",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 99,
   "power_mw_32_ohm": 1000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 545.0,
   "basis_150_ohm": "published",
   "power_mw_300_ohm": 272.3,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 136.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.7,
   "output_noise_uv": 1.99,
   "rated_output": "se",
   "published_points": "32ohm=1000mW; 150ohm=545mW; 600ohm=136mW",
   "confidence": "high",
   "source_url": "https://jdslabs.com/product/atom-amp/",
   "page": "https://thephonepath.com/sources/jds-labs-atom-2nd-gen/"
  },
  {
   "name": "Lake People G103-S Mk II",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 350,
   "power_mw_32_ohm": 1000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 804.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 580.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 340.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 6.15,
   "rated_output": "se",
   "published_points": "32ohm=1000mW; 50ohm=1280mW; 100ohm=1050mW; 300ohm=580mW; 600ohm=340mW",
   "confidence": "medium",
   "source_url": "https://www.lake-people.de/media/pdf/bf/de/82/Lake_People_G103S_S_P_MKII_TechGuide_EN_2024_07.pdf",
   "page": "https://thephonepath.com/sources/lake-people-g103-s-mk-ii/"
  },
  {
   "name": "Lake People G111 Mk II",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 629,
   "power_mw_32_ohm": 1400.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 1374.5,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 1050.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 600.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.125,
   "output_noise_uv": 6.9,
   "rated_output": "se",
   "published_points": "16ohm=770mW; 32ohm=1400mW; 50ohm=2050mW; 100ohm=1750mW; 300ohm=1050mW; 600ohm=600mW",
   "confidence": "medium",
   "source_url": "https://www.lake-people.de/media/pdf/1a/ab/e9/Lake_People_G111_MKII_TechGuide_EN_2024_07.pdf",
   "page": "https://thephonepath.com/sources/lake-people-g111-mk-ii/"
  },
  {
   "name": "Little Dot MK II",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 176,
   "power_mw_32_ohm": 100.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 213.8,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 300.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 150.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=100mW; 120ohm=200mW; 300ohm=300mW",
   "confidence": "medium",
   "source_url": "https://apos.audio/products/little-dot-mk2",
   "page": "https://thephonepath.com/sources/little-dot-mk-ii/"
  },
  {
   "name": "Little Dot MK III SE",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 540,
   "power_mw_32_ohm": 2500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 1466.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 800.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 400.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "32ohm=2500mW; 120ohm=1800mW; 300ohm=800mW",
   "confidence": "medium",
   "source_url": "https://shenzhenaudio.com/products/little-dot-mk3-se-mkiii-se-ld-6n11-tube-transistor-balance-pure-class-a-amplifice",
   "page": "https://thephonepath.com/sources/little-dot-mk-iii-se/"
  },
  {
   "name": "McIntosh MHA200",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 3000,
   "power_mw_32_ohm": 500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 475.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 484.6,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 500.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=500mW; 100ohm=500mW; 250ohm=500mW; 600ohm=500mW",
   "confidence": "medium",
   "source_url": "https://www.mcintoshlabs.com/products/amplifiers/MHA200",
   "page": "https://thephonepath.com/sources/mcintosh-mha200/"
  },
  {
   "name": "PreSonus HP4",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 150,
   "power_mw_32_ohm": 69.3,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 52.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 26.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 13.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "60ohm=130mW",
   "confidence": "medium",
   "source_url": "https://www.presonus.com/products/hp4-4-channel-headphone-amplifiers",
   "page": "https://thephonepath.com/sources/presonus-hp4/"
  },
  {
   "name": "Rupert Neve RNHP",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 699,
   "power_mw_32_ohm": 262.5,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 175.0,
   "basis_150_ohm": "published",
   "power_mw_300_ohm": 87.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 43.8,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.08,
   "output_noise_uv": 8.03,
   "rated_output": "se",
   "published_points": "16ohm=230mW; 44ohm=300mW; 150ohm=175mW",
   "confidence": "medium",
   "source_url": "https://rupertneve.com/products/rnhp",
   "page": "https://thephonepath.com/sources/rupert-neve-rnhp/"
  },
  {
   "name": "Schiit Asgard 3",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 279,
   "power_mw_32_ohm": 3500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 972.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 600.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 300.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.2,
   "output_noise_uv": 1.5,
   "rated_output": "se",
   "published_points": "16ohm=5000mW; 32ohm=3500mW; 50ohm=2500mW; 300ohm=600mW; 600ohm=300mW",
   "confidence": "high",
   "source_url": "https://dev.schiit.com/products/asgard",
   "page": "https://thephonepath.com/sources/schiit-asgard-3/"
  },
  {
   "name": "Schiit Jotunheim 2",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 399,
   "power_mw_32_ohm": 2000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 496.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 330.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 165.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=2000mW; 50ohm=1200mW; 300ohm=330mW; 600ohm=165mW",
   "confidence": "medium",
   "source_url": "https://www.duet.no/produkt/schiit-jotunheim-2/",
   "page": "https://thephonepath.com/sources/schiit-jotunheim-2/"
  },
  {
   "name": "Schiit Lyr 5",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 799,
   "power_mw_32_ohm": 6000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 1511.6,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 900.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 450.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.4,
   "output_noise_uv": 3.99,
   "rated_output": "se",
   "published_points": "16ohm=9000mW; 32ohm=6000mW; 50ohm=4000mW; 300ohm=900mW; 600ohm=450mW",
   "confidence": "medium",
   "source_url": "https://www.schiit.com/products/lyr-5",
   "page": "https://thephonepath.com/sources/schiit-lyr-5/"
  },
  {
   "name": "Schiit Lyr+",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 449,
   "power_mw_32_ohm": 6000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 1511.6,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 900.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 450.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.4,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=9000mW; 32ohm=6000mW; 50ohm=4000mW; 300ohm=900mW; 600ohm=450mW",
   "confidence": "high",
   "source_url": "https://www.schiit.com/products/lyr",
   "page": "https://thephonepath.com/sources/schiit-lyr/"
  },
  {
   "name": "Schiit Magni Heresy",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 99,
   "power_mw_32_ohm": 2400.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 640.6,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 410.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 215.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.25,
   "output_noise_uv": 1.5,
   "rated_output": "se",
   "published_points": "16ohm=2800mW; 32ohm=2400mW; 50ohm=1600mW; 300ohm=410mW; 600ohm=215mW",
   "confidence": "medium",
   "source_url": "https://headphones.com/blogs/reviews/schiit-magni-3-magni-heresy-headphone-amplifier-review-comparison",
   "page": "https://thephonepath.com/sources/schiit-magni-heresy/"
  },
  {
   "name": "Schiit Magni Piety",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 200,
   "power_mw_32_ohm": 1000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 445.7,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 400.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 200.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=1200mW; 32ohm=1000mW; 50ohm=800mW; 300ohm=400mW; 600ohm=200mW",
   "confidence": "medium",
   "source_url": "https://nitschsound.com/products/magni-piety",
   "page": "https://thephonepath.com/sources/schiit-magni-piety/"
  },
  {
   "name": "Schiit Magni Unity",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 119,
   "power_mw_32_ohm": 2500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 622.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 415.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 220.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 1.59,
   "rated_output": "se",
   "published_points": "16ohm=3000mW; 32ohm=2500mW; 50ohm=1500mW; 300ohm=415mW; 600ohm=220mW",
   "confidence": "high",
   "source_url": "https://www.schiit.com/products/magni-unity",
   "page": "https://thephonepath.com/sources/schiit-magni-unity/"
  },
  {
   "name": "Schiit Magni+",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 109,
   "power_mw_32_ohm": 2000,
   "basis_32_ohm": "unverified",
   "power_mw_150_ohm": 560,
   "basis_150_ohm": "unverified",
   "power_mw_300_ohm": 260,
   "basis_300_ohm": "unverified",
   "power_mw_600_ohm": 130,
   "basis_600_ohm": "unverified",
   "output_impedance_ohm": 0.2,
   "output_noise_uv": 1.5,
   "rated_output": "",
   "published_points": "",
   "confidence": "legacy",
   "source_url": "",
   "page": "https://thephonepath.com/sources/schiit-magni/"
  },
  {
   "name": "Schiit Midgard",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 219,
   "power_mw_32_ohm": 4800.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 1231.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 750.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 375.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 1.59,
   "rated_output": "se",
   "published_points": "16ohm=5500mW; 32ohm=4800mW; 50ohm=3200mW; 300ohm=750mW; 600ohm=375mW",
   "confidence": "high",
   "source_url": "https://www.schiit.com/products/midgard",
   "page": "https://thephonepath.com/sources/schiit-midgard/"
  },
  {
   "name": "Schiit Mjolnir 3",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1199,
   "power_mw_32_ohm": 1000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 488.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 500.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 250.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.13,
   "output_noise_uv": 25.18,
   "rated_output": "se",
   "published_points": "32ohm=1000mW; 300ohm=500mW",
   "confidence": "high",
   "source_url": "https://www.schiit.com/products/mjolnir-3",
   "page": "https://thephonepath.com/sources/schiit-mjolnir-3/"
  },
  {
   "name": "Schiit Ragnarok 2",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1499,
   "power_mw_32_ohm": 6000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 1250.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 625.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 312.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 1.5,
   "rated_output": "se",
   "published_points": "32ohm=6000mW; 50ohm=3750mW",
   "confidence": "medium",
   "source_url": "https://www.schiit.com/news/news/ragnarok-2-nexus-integrated-introduced",
   "page": "https://thephonepath.com/sources/schiit-ragnarok-2/"
  },
  {
   "name": "Schiit Valhalla 2",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 349,
   "power_mw_32_ohm": 115.2,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 426.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 800.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 450.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 14.0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "50ohm=180mW; 300ohm=800mW; 600ohm=450mW",
   "confidence": "medium",
   "source_url": "https://www.audiophonics.fr/en/desktop-headphone-amplifiers/schiit-valhalla-2-amplifier-tube-headphones-zero-feedback-p-8910.html",
   "page": "https://thephonepath.com/sources/schiit-valhalla-2/"
  },
  {
   "name": "Schiit Valhalla 3",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 499,
   "power_mw_32_ohm": 750.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 286.5,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 250.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 125.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 25,
   "output_noise_uv": 6.32,
   "rated_output": "se",
   "published_points": "32ohm=750mW; 300ohm=250mW",
   "confidence": "medium",
   "source_url": "https://www.schiit.com/products/valhalla-3",
   "page": "https://thephonepath.com/sources/schiit-valhalla-3/"
  },
  {
   "name": "Schiit Vali 2+",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 149,
   "power_mw_32_ohm": 1500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 495.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 400.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 200.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 1.8,
   "output_noise_uv": 25,
   "rated_output": "se",
   "published_points": "32ohm=1500mW; 50ohm=1000mW; 300ohm=400mW; 600ohm=200mW",
   "confidence": "medium",
   "source_url": "http://stereophile.com/content/schiit-audio-vali-2-headphone-amplifier-specifications",
   "page": "https://thephonepath.com/sources/schiit-vali-2/"
  },
  {
   "name": "Schiit Vali 3",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 149,
   "power_mw_32_ohm": 1500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 495.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 400.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 200.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": 2.83,
   "rated_output": "se",
   "published_points": "32ohm=1500mW; 50ohm=1000mW; 300ohm=400mW; 600ohm=200mW",
   "confidence": "medium",
   "source_url": "https://www.schiit.com/products/vali3",
   "page": "https://thephonepath.com/sources/schiit-vali-3/"
  },
  {
   "name": "Singxer SA-1",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 699,
   "power_mw_32_ohm": 5500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 1594.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 784.9,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 380.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 1.4,
   "output_noise_uv": 0.3,
   "rated_output": "bal",
   "published_points": "16ohm=10000mW; 32ohm=5500mW; 68ohm=3100mW; 120ohm=2000mW; 600ohm=380mW",
   "confidence": "medium",
   "source_url": "https://www.singxer.com/pd.jsp?id=82",
   "page": "https://thephonepath.com/sources/singxer-sa-1/"
  },
  {
   "name": "SMSL H200",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 399,
   "power_mw_32_ohm": 2000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 499.4,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 300.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 150.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=2500mW; 32ohm=2000mW; 300ohm=300mW; 600ohm=150mW",
   "confidence": "medium",
   "source_url": "https://www.smsl-audio.com/portal/product/detail/id/950.html",
   "page": "https://thephonepath.com/sources/smsl-h200/"
  },
  {
   "name": "SMSL H300",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 296,
   "power_mw_32_ohm": 5000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 1066.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 533.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 266.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0,
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "16ohm=10000mW; 32ohm=5000mW",
   "confidence": "medium",
   "source_url": "https://www.smsl-audio.com/portal/product/detail/id/833.html",
   "page": "https://thephonepath.com/sources/smsl-h300/"
  },
  {
   "name": "SMSL H400 MK2",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 539,
   "power_mw_32_ohm": 2500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 527.4,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 260.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 130.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=5000mW; 32ohm=2500mW; 300ohm=260mW; 600ohm=130mW",
   "confidence": "medium",
   "source_url": "https://www.smsl-audio.com/portal/product/detail/id/955.html",
   "page": "https://thephonepath.com/sources/smsl-h400-mk2/"
  },
  {
   "name": "SMSL HO100",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 160,
   "power_mw_32_ohm": 1500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 354.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 200.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 100.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0,
   "output_noise_uv": 1.3,
   "rated_output": "bal",
   "published_points": "16ohm=3000mW; 32ohm=1500mW; 300ohm=200mW; 600ohm=100mW",
   "confidence": "medium",
   "source_url": "https://www.smsl-audio.com/portal/product/detail/id/790.html",
   "page": "https://thephonepath.com/sources/smsl-ho100/"
  },
  {
   "name": "SMSL HO200",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 399,
   "power_mw_32_ohm": 3000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 640.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 320.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 160.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.0,
   "output_noise_uv": 1.0,
   "rated_output": "bal",
   "published_points": "16ohm=6000mW; 32ohm=3000mW",
   "confidence": "medium",
   "source_url": "https://www.smsl-audio.com/portal/product/detail/id/766.html",
   "page": "https://thephonepath.com/sources/smsl-ho200/"
  },
  {
   "name": "SMSL SH-9",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 289,
   "power_mw_32_ohm": 3000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 741.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 440.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 220.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.0,
   "output_noise_uv": 1.5,
   "rated_output": "bal",
   "published_points": "16ohm=6000mW; 32ohm=3000mW; 300ohm=440mW; 600ohm=220mW",
   "confidence": "medium",
   "source_url": "https://www.smsl-audio.com/portal/product/detail/id/730.html",
   "page": "https://thephonepath.com/sources/smsl-sh-9/"
  },
  {
   "name": "SMSL SH-X",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 699,
   "power_mw_32_ohm": 5500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 1185.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 600.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 300.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0,
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "16ohm=11500mW; 32ohm=5500mW; 300ohm=600mW; 600ohm=300mW",
   "confidence": "medium",
   "source_url": "https://www.smsl-audio.com/portal/product/detail/id/888.html",
   "page": "https://thephonepath.com/sources/smsl-sh-x/"
  },
  {
   "name": "SMSL SP400",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 529,
   "power_mw_32_ohm": 3000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 741.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 440.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 220.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0,
   "output_noise_uv": 1.9,
   "rated_output": "se",
   "published_points": "16ohm=6000mW; 32ohm=3000mW; 300ohm=440mW; 600ohm=220mW",
   "confidence": "low",
   "source_url": "https://www.audiophonics.fr/en/desktop-headphone-amplifiers/smsl-sp400-balanced-headphone-amplifier-thx-aaa-888-mqa-p-14913.html",
   "page": "https://thephonepath.com/sources/smsl-sp400/"
  },
  {
   "name": "SMSL VMV P2 MK2",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1160,
   "power_mw_32_ohm": 2000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 499.4,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 300.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 150.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=4000mW; 32ohm=2000mW; 300ohm=300mW; 600ohm=150mW",
   "confidence": "medium",
   "source_url": "https://www.smsl-audio.com/portal/product/detail/id/846.html",
   "page": "https://thephonepath.com/sources/smsl-vmv-p2-mk2/"
  },
  {
   "name": "Soncoz SGA1",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 600,
   "power_mw_32_ohm": 407.3,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 206.8,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 210.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 105.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 1.8,
   "rated_output": "se",
   "published_points": "33ohm=420mW; 300ohm=210mW; 600ohm=105mW",
   "confidence": "medium",
   "source_url": "https://soncoz.com/PRE-AMP/SGA1.html",
   "page": "https://thephonepath.com/sources/soncoz-sga1/"
  },
  {
   "name": "SPL Phonitor se",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1600,
   "power_mw_32_ohm": 1000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 3148.6,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 4166.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 2083.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.18,
   "output_noise_uv": 5.48,
   "rated_output": "se",
   "published_points": "32ohm=1000mW; 250ohm=5000mW",
   "confidence": "medium",
   "source_url": "https://spl.audio/en/spl-produkt/phonitor-se/",
   "page": "https://thephonepath.com/sources/spl-phonitor-se/"
  },
  {
   "name": "SPL Phonitor x",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 3200,
   "power_mw_32_ohm": 1000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 3148.6,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 4166.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 2083.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.18,
   "output_noise_uv": 5.48,
   "rated_output": "se",
   "published_points": "32ohm=1000mW; 250ohm=5000mW",
   "confidence": "medium",
   "source_url": "https://spl.audio/en/spl-produkt/phonitor-x/",
   "page": "https://thephonepath.com/sources/spl-phonitor-x/"
  },
  {
   "name": "SPL Phonitor xe",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 3000,
   "power_mw_32_ohm": 2700.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 3650.8,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 4166.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 2083.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.18,
   "output_noise_uv": 5.48,
   "rated_output": "se",
   "published_points": "32ohm=2700mW; 250ohm=5000mW",
   "confidence": "medium",
   "source_url": "https://spl.audio/en/spl-produkt/phonitor-xe/",
   "page": "https://thephonepath.com/sources/spl-phonitor-xe/"
  },
  {
   "name": "Topping A30 Pro",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 249,
   "power_mw_32_ohm": 5500.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 1385.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 840.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 420.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 0.3,
   "rated_output": "se",
   "published_points": "16ohm=6000mW; 32ohm=5500mW; 300ohm=840mW",
   "confidence": "medium",
   "source_url": "https://www.toppingaudio.com/product-item/a30pro?tab=specs",
   "page": "https://thephonepath.com/sources/topping-a30-pro/"
  },
  {
   "name": "Topping A90",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 499,
   "power_mw_32_ohm": 2000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 426.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 213.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 106.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 0.2,
   "rated_output": "se",
   "published_points": "32ohm=2000mW",
   "confidence": "low",
   "source_url": "https://toppingaudio.com/products-list/headphone-amp",
   "page": "https://thephonepath.com/sources/topping-a90/"
  },
  {
   "name": "Topping A90 Discrete",
   "type": "desktop",
   "tier": "midfi",
   "price_usd": 599,
   "power_mw_32_ohm": 2000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 480.4,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 250.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 125.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 0.2,
   "rated_output": "se",
   "published_points": "16ohm=3300mW; 32ohm=2000mW; 64ohm=1100mW; 300ohm=250mW",
   "confidence": "low",
   "source_url": "https://toppingaudio.com/product-item/a90-discrete",
   "page": "https://thephonepath.com/sources/topping-a90-discrete/"
  },
  {
   "name": "Topping L30 II",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 149,
   "power_mw_32_ohm": 2700.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 946.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 560.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 280.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 0.3,
   "rated_output": "se",
   "published_points": "16ohm=3500mW; 32ohm=2700mW; 64ohm=2000mW; 300ohm=560mW",
   "confidence": "medium",
   "source_url": "https://www.toppingaudio.com/product-item/l30-ii",
   "page": "https://thephonepath.com/sources/topping-l30-ii/"
  },
  {
   "name": "Topping L50",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 229,
   "power_mw_32_ohm": 2800.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 932.8,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 540.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 290.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=3500mW; 32ohm=2800mW; 64ohm=2000mW; 300ohm=540mW; 600ohm=290mW",
   "confidence": "low",
   "source_url": "https://www.audiophonics.fr/en/desktop-headphone-amplifiers/topping-l50-balanced-headphone-amplifier-nfca-black-p-15586.html",
   "page": "https://thephonepath.com/sources/topping-l50/"
  },
  {
   "name": "Violectric V222",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1245,
   "power_mw_32_ohm": 2700.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 2730.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 1800.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 1100.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.25,
   "output_noise_uv": 6.15,
   "rated_output": "se",
   "published_points": "16ohm=1600mW; 32ohm=2700mW; 50ohm=3400mW; 100ohm=3700mW; 300ohm=1800mW; 600ohm=1100mW",
   "confidence": "medium",
   "source_url": "https://www.violectric.de/media/pdf/ae/75/5b/Violectric_HPA_V222_TechGuide_EN_2022_10.pdf",
   "page": "https://thephonepath.com/sources/violectric-v222/"
  },
  {
   "name": "Violectric V550 Pro",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 3600,
   "power_mw_32_ohm": 4700.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 2875.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 1450.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 740.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.15,
   "output_noise_uv": 5.48,
   "rated_output": "se",
   "published_points": "16ohm=2000mW; 32ohm=4700mW; 50ohm=6400mW; 100ohm=4300mW; 300ohm=1450mW; 600ohm=740mW",
   "confidence": "medium",
   "source_url": "https://www.violectric.de/media/pdf/41/b2/78/Violectric_HPA_V550_TechGuide_EN_2022_12.pdf",
   "page": "https://thephonepath.com/sources/violectric-v550-pro/"
  },
  {
   "name": "Wells Audio Milo",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1700,
   "power_mw_32_ohm": 12000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 3066.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 1533.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 766.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 1.5,
   "rated_output": "se",
   "published_points": "32ohm=12000mW; 46ohm=10000mW",
   "confidence": "medium",
   "source_url": "https://www.wellsaudio.com/milo",
   "page": "https://thephonepath.com/sources/wells-audio-milo/"
  },
  {
   "name": "Woo Audio WA6",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 1099,
   "power_mw_32_ohm": 580.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 536.4,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 460.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 400.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=580mW; 60ohm=550mW; 120ohm=590mW; 300ohm=460mW; 600ohm=400mW",
   "confidence": "medium",
   "source_url": "https://wooaudio.com/amplifiers/wa6",
   "page": "https://thephonepath.com/sources/woo-audio-wa6/"
  },
  {
   "name": "xDuoo MT-604",
   "type": "desktop",
   "tier": "budget",
   "price_usd": 169,
   "power_mw_32_ohm": 2000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 426.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 213.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 106.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "32ohm=2000mW",
   "confidence": "medium",
   "source_url": "https://xduoo.net/product/mt-604/",
   "page": "https://thephonepath.com/sources/xduoo-mt-604/"
  },
  {
   "name": "xDuoo TA-30",
   "type": "desktop",
   "tier": "highend",
   "price_usd": 709,
   "power_mw_32_ohm": 3000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 640.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 320.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 160.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=3000mW",
   "confidence": "medium",
   "source_url": "https://xduoo.net/product/ta-30",
   "page": "https://thephonepath.com/sources/xduoo-ta-30/"
  },
  {
   "name": "Apple USB-C dongle (EU)",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 9,
   "power_mw_32_ohm": 15,
   "basis_32_ohm": "unverified",
   "power_mw_150_ohm": 4,
   "basis_150_ohm": "unverified",
   "power_mw_300_ohm": 2,
   "basis_300_ohm": "unverified",
   "power_mw_600_ohm": 1,
   "basis_600_ohm": "unverified",
   "output_impedance_ohm": 1,
   "output_noise_uv": 6,
   "rated_output": "",
   "published_points": "",
   "confidence": "legacy",
   "source_url": "",
   "page": "https://thephonepath.com/sources/apple-usb-c-dongle-eu/"
  },
  {
   "name": "Apple USB-C dongle (US)",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 9,
   "power_mw_32_ohm": 30,
   "basis_32_ohm": "unverified",
   "power_mw_150_ohm": 8,
   "basis_150_ohm": "unverified",
   "power_mw_300_ohm": 4,
   "basis_300_ohm": "unverified",
   "power_mw_600_ohm": 2,
   "basis_600_ohm": "unverified",
   "output_impedance_ohm": 1,
   "output_noise_uv": 6,
   "rated_output": "",
   "published_points": "",
   "confidence": "legacy",
   "source_url": "",
   "page": "https://thephonepath.com/sources/apple-usb-c-dongle-us/"
  },
  {
   "name": "Astell&Kern HC3",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 179,
   "power_mw_32_ohm": 125.0,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 26.7,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 13.3,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 6.7,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 2.0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "high",
   "source_url": "https://astellnkern.co.uk/products/ak-hc3-dual-dac-cable",
   "page": "https://thephonepath.com/sources/astellandkern-hc3/"
  },
  {
   "name": "Astell&Kern HC4",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 219,
   "power_mw_32_ohm": 125.0,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 26.7,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 13.3,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 6.7,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 0.9,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "high",
   "source_url": "https://astellnkern.co.uk/products/ak-hc4-dac-amp",
   "page": "https://thephonepath.com/sources/astellandkern-hc4/"
  },
  {
   "name": "Cayin RU7",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 269,
   "power_mw_32_ohm": 160.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 34.1,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 17.1,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 8.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=160mW",
   "confidence": "medium",
   "source_url": "https://en.cayin.cn/features/7/124/603.html",
   "page": "https://thephonepath.com/sources/cayin-ru7/"
  },
  {
   "name": "Cayin RU9",
   "type": "dongle",
   "tier": "highend",
   "price_usd": 499,
   "power_mw_32_ohm": 160.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 34.1,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 17.1,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 8.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=160mW",
   "confidence": "medium",
   "source_url": "https://cayin.com/ca-inhalte/uploads/2025/08/RU9_Manuel_engl.pdf",
   "page": "https://thephonepath.com/sources/cayin-ru9/"
  },
  {
   "name": "ddHiFi TC35Air",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 46,
   "power_mw_32_ohm": 210.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 44.8,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 22.4,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 11.2,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=210mW",
   "confidence": "medium",
   "source_url": "https://www.ddhifi.com/en/product/tc35air/",
   "page": "https://thephonepath.com/sources/ddhifi-tc35air/"
  },
  {
   "name": "ddHiFi TC35AL",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 46,
   "power_mw_32_ohm": 210.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 44.8,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 22.4,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 11.2,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=210mW",
   "confidence": "medium",
   "source_url": "https://www.ddhifi.com/en/product/tc35al/",
   "page": "https://thephonepath.com/sources/ddhifi-tc35al/"
  },
  {
   "name": "ddHiFi TC35Pro (Eye2)",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 76,
   "power_mw_32_ohm": 65.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 13.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 6.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 3.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=65mW",
   "confidence": "medium",
   "source_url": "https://www.ddhifi.com/en/release/3706/",
   "page": "https://thephonepath.com/sources/ddhifi-tc35pro-eye2/"
  },
  {
   "name": "ddHiFi TC35Pro (Mountain2)",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 66,
   "power_mw_32_ohm": 65.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 13.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 6.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 3.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=65mW",
   "confidence": "medium",
   "source_url": "https://www.ddhifi.com/en/product/tc35pro/",
   "page": "https://thephonepath.com/sources/ddhifi-tc35pro-mountain2/"
  },
  {
   "name": "ddHiFi TC44 Pro",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 189,
   "power_mw_32_ohm": 120.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 25.6,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 12.8,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 6.4,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.4,
   "output_noise_uv": 2.5,
   "rated_output": "bal",
   "published_points": "32ohm=120mW",
   "confidence": "high",
   "source_url": "https://www.ddhifi.com/en/release/3899/",
   "page": "https://thephonepath.com/sources/ddhifi-tc44-pro/"
  },
  {
   "name": "ddHiFi TC44 Pro E2",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 99,
   "power_mw_32_ohm": 250.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 53.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 26.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 13.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "32ohm=250mW",
   "confidence": "high",
   "source_url": "https://www.ddhifi.com/en/product/tc44pro-e2/",
   "page": "https://thephonepath.com/sources/ddhifi-tc44-pro-e2/"
  },
  {
   "name": "ddHiFi TC44Grip",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 160,
   "power_mw_32_ohm": 80.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 17.1,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 8.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 4.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=80mW",
   "confidence": "medium",
   "source_url": "https://www.ddhifi.com/en/product/tc44grip/",
   "page": "https://thephonepath.com/sources/ddhifi-tc44grip/"
  },
  {
   "name": "DUNU DTC 480",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 70,
   "power_mw_32_ohm": 65.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 13.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 6.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 3.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=65mW",
   "confidence": "medium",
   "source_url": "https://www.dunu-topsound.com/product-page/dtc-480",
   "page": "https://thephonepath.com/sources/dunu-dtc-480/"
  },
  {
   "name": "EarMen Colibri",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 299,
   "power_mw_32_ohm": 75.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 16.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 8.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 4.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=150mW; 32ohm=75mW",
   "confidence": "medium",
   "source_url": "https://earmen-shop.com/products/earmen-colibri",
   "page": "https://thephonepath.com/sources/earmen-colibri/"
  },
  {
   "name": "EPZ TP35 Pro",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 70,
   "power_mw_32_ohm": 112.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 23.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 11.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 6.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=112mW",
   "confidence": "medium",
   "source_url": "https://epzaudio.com/products/epz-tp35-pro-usb-c-dac-amp-dongle",
   "page": "https://thephonepath.com/sources/epz-tp35-pro/"
  },
  {
   "name": "EPZ TP50",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 210,
   "power_mw_32_ohm": 121.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 25.8,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 12.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 6.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": 1.0,
   "rated_output": "se",
   "published_points": "32ohm=121mW",
   "confidence": "medium",
   "source_url": "https://epzaudio.com/product/tp50/",
   "page": "https://thephonepath.com/sources/epz-tp50/"
  },
  {
   "name": "FiiO KA11",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 29,
   "power_mw_32_ohm": 200.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 43.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 22.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 11.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.7,
   "output_noise_uv": 1.7,
   "rated_output": "se",
   "published_points": "16ohm=245mW; 32ohm=200mW; 300ohm=22mW",
   "confidence": "medium",
   "source_url": "https://fiio-shop.de/EN/FiiO-KA11/HL02308.4",
   "page": "https://thephonepath.com/sources/fiio-ka11/"
  },
  {
   "name": "FiiO KA13",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 79,
   "power_mw_32_ohm": 50.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 10.4,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 5.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 2.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.7,
   "output_noise_uv": 2.5,
   "rated_output": "se",
   "published_points": "16ohm=70mW; 32ohm=50mW; 300ohm=5mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/ka13_parameters",
   "page": "https://thephonepath.com/sources/fiio-ka13/"
  },
  {
   "name": "FiiO KA15",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 109,
   "power_mw_32_ohm": 180.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 38.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 19.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 9.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.8,
   "output_noise_uv": 1.7,
   "rated_output": "se",
   "published_points": "16ohm=290mW; 32ohm=180mW; 300ohm=19mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/KA15_parameters",
   "page": "https://thephonepath.com/sources/fiio-ka15/"
  },
  {
   "name": "FiiO KA17",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 149,
   "power_mw_32_ohm": 140.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 34.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 20.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 10.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 2.0,
   "rated_output": "se",
   "published_points": "16ohm=110mW; 32ohm=140mW; 300ohm=20mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/KA17_parameters",
   "page": "https://thephonepath.com/sources/fiio-ka17/"
  },
  {
   "name": "FiiO KA3",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 79,
   "power_mw_32_ohm": 130.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 27.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 14.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 7.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": 1.7,
   "rated_output": "se",
   "published_points": "16ohm=120mW; 32ohm=130mW; 300ohm=14mW; 600ohm=7mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/ka3_parameters",
   "page": "https://thephonepath.com/sources/fiio-ka3/"
  },
  {
   "name": "FiiO KA5",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 99,
   "power_mw_32_ohm": 122.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 26.5,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 13.5,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 6.8,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.3,
   "output_noise_uv": 1.6,
   "rated_output": "se",
   "published_points": "16ohm=136mW; 32ohm=122mW; 300ohm=13.5mW",
   "confidence": "high",
   "source_url": "https://www.fiio.com/ka5_parameters",
   "page": "https://thephonepath.com/sources/fiio-ka5/"
  },
  {
   "name": "FiiO SnowSky Tiny A",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 22,
   "power_mw_32_ohm": 34.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 7.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 3.6,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 1.8,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=45mW; 32ohm=34mW",
   "confidence": "medium",
   "source_url": "https://fiio.eu/product/fiio-snowsky-tiny-a-silver-portable-usb-dac-headphone-amplifier-10-band-peq-pcm-384khzdsd256-35mm-type-c-charging",
   "page": "https://thephonepath.com/sources/fiio-snowsky-tiny-a/"
  },
  {
   "name": "FiiO SnowSky Tiny B",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 22,
   "power_mw_32_ohm": 34.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 7.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 3.6,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 1.8,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=68mW; 32ohm=34mW",
   "confidence": "medium",
   "source_url": "https://fiio.eu/product/fiio-snowsky-tiny-b-black-portable-usb-dac-headphone-amplifier-35mm-44mm-dual-output-10-band-peq-pcm-384khz-dsd256",
   "page": "https://thephonepath.com/sources/fiio-snowsky-tiny-b/"
  },
  {
   "name": "Generic CX31993 dongles",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 12,
   "power_mw_32_ohm": 60,
   "basis_32_ohm": "unverified",
   "power_mw_150_ohm": 18,
   "basis_150_ohm": "unverified",
   "power_mw_300_ohm": 9,
   "basis_300_ohm": "unverified",
   "power_mw_600_ohm": 5,
   "basis_600_ohm": "unverified",
   "output_impedance_ohm": 1.5,
   "output_noise_uv": 8,
   "rated_output": "",
   "published_points": "",
   "confidence": "legacy",
   "source_url": "",
   "page": "https://thephonepath.com/sources/generic-cx31993-dongles/"
  },
  {
   "name": "HiBy FC4",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 99,
   "power_mw_32_ohm": 110.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 23.5,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 11.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 5.9,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": 1.7,
   "rated_output": "se",
   "published_points": "32ohm=110mW",
   "confidence": "medium",
   "source_url": "https://store.hiby.com/products/hiby-fc4",
   "page": "https://thephonepath.com/sources/hiby-fc4/"
  },
  {
   "name": "Hidizs S9 Pro",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 109,
   "power_mw_32_ohm": 100.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 21.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 10.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 5.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.3,
   "output_noise_uv": 4,
   "rated_output": "se",
   "published_points": "32ohm=100mW",
   "confidence": "high",
   "source_url": "https://www.hidizs.net/pages/hidizs-s9-pro-balanced-single-ended-mini-hifi-dac-amp-specifications",
   "page": "https://thephonepath.com/sources/hidizs-s9-pro/"
  },
  {
   "name": "Hidizs S9 Pro Plus",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 139,
   "power_mw_32_ohm": 138.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 29.4,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 14.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 7.4,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=138mW",
   "confidence": "high",
   "source_url": "https://www.hidizs.net/products/hidizs-s9-pro-plus-martha-hifi-balanced-dongle-dac",
   "page": "https://thephonepath.com/sources/hidizs-s9-pro-plus/"
  },
  {
   "name": "Hidizs SD2",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 50,
   "power_mw_32_ohm": 70.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 14.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 7.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 3.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=70mW",
   "confidence": "medium",
   "source_url": "https://www.hidizs.net/products/hidizs-sd2-hifi-type-c-to-3-5mm-adapter-dongle-dac",
   "page": "https://thephonepath.com/sources/hidizs-sd2/"
  },
  {
   "name": "iBasso DC-Elite",
   "type": "dongle",
   "tier": "highend",
   "price_usd": 449,
   "power_mw_32_ohm": 162.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 34.6,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 17.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 8.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=162mW",
   "confidence": "high",
   "source_url": "https://ibassousa.com/ibasso-dc-elite/",
   "page": "https://thephonepath.com/sources/ibasso-dc-elite/"
  },
  {
   "name": "iBasso DC03 Pro",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 69,
   "power_mw_32_ohm": 98.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 20.9,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 10.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 5.2,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.12,
   "output_noise_uv": 0.9,
   "rated_output": "se",
   "published_points": "32ohm=98mW",
   "confidence": "high",
   "source_url": "https://ibassousa.com/ibasso-dc03pro/",
   "page": "https://thephonepath.com/sources/ibasso-dc03-pro/"
  },
  {
   "name": "iBasso DC04 Pro",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 119,
   "power_mw_32_ohm": 125.0,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 26.7,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 13.3,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 6.7,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 0.2,
   "output_noise_uv": 2.5,
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://ibasso.com/product/dc04pro/",
   "page": "https://thephonepath.com/sources/ibasso-dc04-pro/"
  },
  {
   "name": "iBasso DC07 Pro",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 199,
   "power_mw_32_ohm": 118.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 25.2,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 12.6,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 6.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=118mW",
   "confidence": "medium",
   "source_url": "https://ibassousa.com/ibasso-dc07pro/",
   "page": "https://thephonepath.com/sources/ibasso-dc07-pro/"
  },
  {
   "name": "iFi GO link",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 59,
   "power_mw_32_ohm": 70.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 20.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 14.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 7.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.4,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=70mW; 300ohm=14mW",
   "confidence": "medium",
   "source_url": "https://ifi-audio.com/products/go-link",
   "page": "https://thephonepath.com/sources/ifi-go-link/"
  },
  {
   "name": "JadeAudio JA11",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 20,
   "power_mw_32_ohm": 30.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 6.4,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 3.2,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 1.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": 1.7,
   "rated_output": "se",
   "published_points": "32ohm=30mW",
   "confidence": "medium",
   "source_url": "https://fiio-shop.de/EN/FiiO-JadeAudio-JA11/HL02390.1",
   "page": "https://thephonepath.com/sources/jadeaudio-ja11/"
  },
  {
   "name": "Kiwi Ears Allegro Mini",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 24,
   "power_mw_32_ohm": 30.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 6.4,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 3.2,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 1.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": 3.0,
   "rated_output": "se",
   "published_points": "32ohm=30mW",
   "confidence": "medium",
   "source_url": "https://kiwiears.com/products/kiwi-ears-allegro-mini",
   "page": "https://thephonepath.com/sources/kiwi-ears-allegro-mini/"
  },
  {
   "name": "Kiwi Ears Allegro Pro",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 60,
   "power_mw_32_ohm": 68.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 14.5,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 7.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 3.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=68mW",
   "confidence": "medium",
   "source_url": "https://kiwiears.com/products/kiwi-ears-allegro-pro",
   "page": "https://thephonepath.com/sources/kiwi-ears-allegro-pro/"
  },
  {
   "name": "Luxury & Precision W4",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 449,
   "power_mw_32_ohm": 110.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 23.5,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 11.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 5.9,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=110mW",
   "confidence": "medium",
   "source_url": "http://www.luxuryprecision.net/shangpin/bofangqi/2023-05-23/43.html",
   "page": "https://thephonepath.com/sources/luxury-and-precision-w4/"
  },
  {
   "name": "Moondrop Dawn Pro",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 75,
   "power_mw_32_ohm": 125.0,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 26.7,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 13.3,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 6.7,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 0.3,
   "output_noise_uv": 1.5,
   "rated_output": "se",
   "published_points": "",
   "confidence": "high",
   "source_url": "https://moondroplab.com/en/products/dawn-pro",
   "page": "https://thephonepath.com/sources/moondrop-dawn-pro/"
  },
  {
   "name": "Moondrop Moonriver 2 Ti",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 190,
   "power_mw_32_ohm": 280.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 78.5,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 53.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 26.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": 1.5,
   "rated_output": "bal",
   "published_points": "32ohm=280mW; 300ohm=53mW",
   "confidence": "high",
   "source_url": "https://moondroplab.com/en/products/moonriver2-ti",
   "page": "https://thephonepath.com/sources/moondrop-moonriver-2-ti/"
  },
  {
   "name": "Onix Alpha XI1",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 109,
   "power_mw_32_ohm": 180.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 38.4,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 19.2,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 9.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.4,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=180mW",
   "confidence": "medium",
   "source_url": "https://onixhiend.co.uk/introducing-onix-alpha/",
   "page": "https://thephonepath.com/sources/onix-alpha-xi1/"
  },
  {
   "name": "Qudelix T71",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 229,
   "power_mw_32_ohm": 500.0,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 106.7,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 53.3,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 26.7,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 0.3,
   "output_noise_uv": 2.5,
   "rated_output": "se",
   "published_points": "",
   "confidence": "high",
   "source_url": "https://www.qudelix.com/products/copy-of-qudelix-t71-usb-dac",
   "page": "https://thephonepath.com/sources/qudelix-t71/"
  },
  {
   "name": "Questyle M15",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 250,
   "power_mw_32_ohm": 300,
   "basis_32_ohm": "unverified",
   "power_mw_150_ohm": 110,
   "basis_150_ohm": "unverified",
   "power_mw_300_ohm": 55,
   "basis_300_ohm": "unverified",
   "power_mw_600_ohm": 28,
   "basis_600_ohm": "unverified",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": 3,
   "rated_output": "",
   "published_points": "",
   "confidence": "legacy",
   "source_url": "",
   "page": "https://thephonepath.com/sources/questyle-m15/"
  },
  {
   "name": "Shanling UA5",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 259,
   "power_mw_32_ohm": 137.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 29.2,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 14.6,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 7.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.8,
   "output_noise_uv": 3.5,
   "rated_output": "se",
   "published_points": "32ohm=137mW",
   "confidence": "high",
   "source_url": "https://device.report/manual/8855535",
   "page": "https://thephonepath.com/sources/shanling-ua5/"
  },
  {
   "name": "Tanchjim LUNA",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 140,
   "power_mw_32_ohm": 285.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 79.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 54.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 27.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": 1.3,
   "rated_output": "bal",
   "published_points": "16ohm=175mW; 32ohm=285mW; 300ohm=54mW",
   "confidence": "medium",
   "source_url": "https://tanchjim.com/en/products/dac/luna/",
   "page": "https://thephonepath.com/sources/tanchjim-luna/"
  },
  {
   "name": "Tanchjim Space",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 70,
   "power_mw_32_ohm": 125.0,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 26.7,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 13.3,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 6.7,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": "",
   "output_noise_uv": 1.1,
   "rated_output": "se",
   "published_points": "",
   "confidence": "high",
   "source_url": "https://tanchjim.com/en/products/dac/space/",
   "page": "https://thephonepath.com/sources/tanchjim-space/"
  },
  {
   "name": "Tanchjim Stargate II",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 40,
   "power_mw_32_ohm": 75.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 16.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 8.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 4.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "16ohm=82mW; 32ohm=75mW",
   "confidence": "medium",
   "source_url": "https://tanchjim.com/en/products/dac/stargate-ii/",
   "page": "https://thephonepath.com/sources/tanchjim-stargate-ii/"
  },
  {
   "name": "Tempotec Sonata BHD Pro",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 60,
   "power_mw_32_ohm": 280.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 59.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 29.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 14.9,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.6,
   "output_noise_uv": 4,
   "rated_output": "bal",
   "published_points": "32ohm=280mW",
   "confidence": "high",
   "source_url": "https://www.tempotec.net/products/sonata-bhd-pro-usb-dac",
   "page": "https://thephonepath.com/sources/tempotec-sonata-bhd-pro/"
  },
  {
   "name": "THX Onyx",
   "type": "dongle",
   "tier": "midfi",
   "price_usd": 200,
   "power_mw_32_ohm": 123.8,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 26.4,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 13.2,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 6.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.2,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "22ohm=180mW",
   "confidence": "medium",
   "source_url": "https://www.thx.com/thx-onyx/support/",
   "page": "https://thephonepath.com/sources/thx-onyx/"
  },
  {
   "name": "Truthear SHIO",
   "type": "dongle",
   "tier": "budget",
   "price_usd": 70,
   "power_mw_32_ohm": 125.0,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 26.7,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 13.3,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 6.7,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 0.3,
   "output_noise_uv": 1.6,
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://truthear.com/products/shio",
   "page": "https://thephonepath.com/sources/truthear-shio/"
  },
  {
   "name": "Apogee BOOM",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 299,
   "power_mw_32_ohm": 240.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 51.2,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 25.6,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 12.8,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=240mW",
   "confidence": "medium",
   "source_url": "https://apogeedigital.com/product/boom/",
   "page": "https://thephonepath.com/sources/apogee-boom/"
  },
  {
   "name": "Apogee Duet 3",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 649,
   "power_mw_32_ohm": 1183.1,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 252.4,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 126.2,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 63.1,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 0.5,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://apogeedigital.com/product/apogee-duet-3/",
   "page": "https://thephonepath.com/sources/apogee-duet-3/"
  },
  {
   "name": "Apogee Symphony Desktop",
   "type": "interface",
   "tier": "highend",
   "price_usd": 1495,
   "power_mw_32_ohm": 490.4,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 145.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 103.0,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 90.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=520mW; 600ohm=90mW",
   "confidence": "medium",
   "source_url": "https://apogeedigital.com/product/symphony-desktop/",
   "page": "https://thephonepath.com/sources/apogee-symphony-desktop/"
  },
  {
   "name": "Arturia AudioFuse Rev2",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 599,
   "power_mw_32_ohm": 187.4,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 40.0,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 20.0,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 10.0,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 33,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://www.arturia.com/products/audio/audiofuse/details",
   "page": "https://thephonepath.com/sources/arturia-audiofuse-rev2/"
  },
  {
   "name": "Arturia MiniFuse 1",
   "type": "interface",
   "tier": "budget",
   "price_usd": 149,
   "power_mw_32_ohm": 139.2,
   "basis_32_ohm": "source-impedance",
   "power_mw_150_ohm": 45.0,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 24.0,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 12.4,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 10,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=137mW",
   "confidence": "medium",
   "source_url": "https://www.arturia.com/products/audio/minifuse-1/overview",
   "page": "https://thephonepath.com/sources/arturia-minifuse-1/"
  },
  {
   "name": "Arturia MiniFuse 2",
   "type": "interface",
   "tier": "budget",
   "price_usd": 149,
   "power_mw_32_ohm": 139.2,
   "basis_32_ohm": "source-impedance",
   "power_mw_150_ohm": 45.0,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 24.0,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 12.4,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 10,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=137mW",
   "confidence": "medium",
   "source_url": "https://dl.arturia.net/products/minifuse-2/manual/minifuse-2_Manual_1_0_0_EN.pdf",
   "page": "https://thephonepath.com/sources/arturia-minifuse-2/"
  },
  {
   "name": "Arturia MiniFuse 4",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 299,
   "power_mw_32_ohm": 139.2,
   "basis_32_ohm": "source-impedance",
   "power_mw_150_ohm": 45.0,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 24.0,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 12.4,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 10,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=137mW",
   "confidence": "medium",
   "source_url": "https://www.arturia.com/products/audio/minifuse-4/overview",
   "page": "https://thephonepath.com/sources/arturia-minifuse-4/"
  },
  {
   "name": "Audient EVO 16",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 750,
   "power_mw_32_ohm": 86.7,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 49.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 31.5,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 24.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 50,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=86mW; 60ohm=104mW; 600ohm=24mW",
   "confidence": "medium",
   "source_url": "https://audient.com/products/audio-interfaces/evo-16/tech-specs/",
   "page": "https://thephonepath.com/sources/audient-evo-16/"
  },
  {
   "name": "Audient EVO 4",
   "type": "interface",
   "tier": "budget",
   "price_usd": 129,
   "power_mw_32_ohm": 22.5,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 14.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 10.8,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 10.3,
   "basis_600_ohm": "recomputed",
   "output_impedance_ohm": 50,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=22.4mW; 60ohm=26.4mW; 600ohm=10.3mW",
   "confidence": "medium",
   "source_url": "https://audient.com/products/audio-interfaces/evo-4/tech-specs/",
   "page": "https://thephonepath.com/sources/audient-evo-4/"
  },
  {
   "name": "Audient EVO 8",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 249,
   "power_mw_32_ohm": 22.5,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 14.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 10.8,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 10.3,
   "basis_600_ohm": "recomputed",
   "output_impedance_ohm": 50,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=22.4mW; 60ohm=26.4mW; 600ohm=10.3mW",
   "confidence": "medium",
   "source_url": "https://audient.com/products/audio-interfaces/evo-8/tech-specs/",
   "page": "https://thephonepath.com/sources/audient-evo-8/"
  },
  {
   "name": "Audient Horizon 8P",
   "type": "interface",
   "tier": "highend",
   "price_usd": 3500,
   "power_mw_32_ohm": 986.1,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 277.7,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 139.9,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 71.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 10,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=1030mW; 60ohm=691mW; 600ohm=71mW",
   "confidence": "medium",
   "source_url": "https://audient.com/products/audio-interfaces/horizon-8p/tech-specs/",
   "page": "https://thephonepath.com/sources/audient-horizon-8p/"
  },
  {
   "name": "Audient iD14 MkII",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 349,
   "power_mw_32_ohm": 112.5,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 75.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 55.0,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 49.7,
   "basis_600_ohm": "recomputed",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=111.3mW; 62ohm=140.4mW; 600ohm=49.7mW",
   "confidence": "medium",
   "source_url": "https://support.audient.com/hc/en-us/articles/360054621132-iD14-MKII-Technical-Specifications",
   "page": "https://thephonepath.com/sources/audient-id14-mkii/"
  },
  {
   "name": "Audient iD24",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 599,
   "power_mw_32_ohm": 118.5,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 79.7,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 58.0,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 52.3,
   "basis_600_ohm": "recomputed",
   "output_impedance_ohm": 50,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=116.6mW; 60ohm=153mW; 600ohm=52.3mW",
   "confidence": "medium",
   "source_url": "https://support.audient.com/hc/en-us/articles/12847886517396-iD24-Technical-Specifications",
   "page": "https://thephonepath.com/sources/audient-id24/"
  },
  {
   "name": "Audient iD4 MkII",
   "type": "interface",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 112.5,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 75.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 55.0,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 49.7,
   "basis_600_ohm": "recomputed",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=111.3mW; 62ohm=140.4mW; 600ohm=49.7mW",
   "confidence": "medium",
   "source_url": "https://support.audient.com/hc/en-us/articles/360055048851-iD4-MKII-Technical-Specifications",
   "page": "https://thephonepath.com/sources/audient-id4-mkii/"
  },
  {
   "name": "Audient iD44 MkII",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 809,
   "power_mw_32_ohm": 189.5,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 40.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 41.5,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 54.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 50,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=210mW; 60ohm=54mW; 600ohm=54mW",
   "confidence": "medium",
   "source_url": "https://audient.com/products/audio-interfaces/id44/tech-specs/",
   "page": "https://thephonepath.com/sources/audient-id44-mkii/"
  },
  {
   "name": "Audient iD48",
   "type": "interface",
   "tier": "highend",
   "price_usd": 1300,
   "power_mw_32_ohm": 527.8,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 264.7,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 168.0,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 126.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 50,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=530mW; 60ohm=565mW; 600ohm=126mW",
   "confidence": "medium",
   "source_url": "https://audient.com/products/audio-interfaces/id48/tech-specs/",
   "page": "https://thephonepath.com/sources/audient-id48/"
  },
  {
   "name": "Audient NERO",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 720,
   "power_mw_32_ohm": 85.7,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 23.5,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 12.7,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 7.35,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=90mW; 60ohm=56mW; 600ohm=7.35mW",
   "confidence": "medium",
   "source_url": "https://audient.com/products/monitor-controllers/nero/tech-specs/",
   "page": "https://thephonepath.com/sources/audient-nero/"
  },
  {
   "name": "Audient ORIA",
   "type": "interface",
   "tier": "highend",
   "price_usd": 3500,
   "power_mw_32_ohm": 979.1,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 384.7,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 209.5,
   "basis_300_ohm": "interpolated",
   "power_mw_600_ohm": 123.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": 50,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "30ohm=997mW; 60ohm=912mW; 600ohm=123mW",
   "confidence": "medium",
   "source_url": "https://audient.com/products/monitor-controllers/oria/specifications/",
   "page": "https://thephonepath.com/sources/audient-oria/"
  },
  {
   "name": "Focusrite Scarlett 16i16 (4th Gen)",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 410,
   "power_mw_32_ohm": 55.3,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 27.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 27.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 13.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 11,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=57mW; 300ohm=27mW",
   "confidence": "medium",
   "source_url": "https://us.focusrite.com/products/scarlett-16i16",
   "page": "https://thephonepath.com/sources/focusrite-scarlett-16i16-4th-gen/"
  },
  {
   "name": "Focusrite Scarlett 18i16 (4th Gen)",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 570,
   "power_mw_32_ohm": 55.3,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 27.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 27.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 13.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 11,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=57mW; 300ohm=27mW",
   "confidence": "medium",
   "source_url": "https://us.focusrite.com/products/scarlett-18i16",
   "page": "https://thephonepath.com/sources/focusrite-scarlett-18i16-4th-gen/"
  },
  {
   "name": "Focusrite Scarlett 18i20 4th gen",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 699,
   "power_mw_32_ohm": 55.3,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 27.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 27.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 13.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 11,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=57mW; 300ohm=27mW",
   "confidence": "medium",
   "source_url": "https://userguides.focusrite.com/hc/en-gb/articles/21616107507218-18i20-4th-Gen-Specifications",
   "page": "https://thephonepath.com/sources/focusrite-scarlett-18i20-4th-gen/"
  },
  {
   "name": "Focusrite Scarlett 2i2 4th gen",
   "type": "interface",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 31.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 19.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 22.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 11.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 50,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=32mW; 300ohm=22mW",
   "confidence": "medium",
   "source_url": "https://userguides.focusrite.com/hc/en-gb/articles/19640392541202-Scarlett-2i2-Specifications",
   "page": "https://thephonepath.com/sources/focusrite-scarlett-2i2-4th-gen/"
  },
  {
   "name": "Focusrite Scarlett 4i4 4th gen",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 279,
   "power_mw_32_ohm": 55.3,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 27.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 27.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 13.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 11,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=57mW; 300ohm=27mW",
   "confidence": "medium",
   "source_url": "https://userguides.focusrite.com/hc/en-gb/articles/18676425695890-Scarlett-4i4-Specifications",
   "page": "https://thephonepath.com/sources/focusrite-scarlett-4i4-4th-gen/"
  },
  {
   "name": "Focusrite Scarlett Solo 4th gen",
   "type": "interface",
   "tier": "budget",
   "price_usd": 139,
   "power_mw_32_ohm": 31.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 19.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 22.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 11.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 50,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=32mW; 300ohm=22mW",
   "confidence": "medium",
   "source_url": "https://userguides.focusrite.com/hc/en-gb/articles/17505454908562-Solo-4th-Gen-Specifications",
   "page": "https://thephonepath.com/sources/focusrite-scarlett-solo-4th-gen/"
  },
  {
   "name": "Focusrite Vocaster Two",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 250,
   "power_mw_32_ohm": 27.2,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 10.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 7.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 3.8,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "33ohm=28mW; 270ohm=8.5mW",
   "confidence": "medium",
   "source_url": "https://userguides.focusrite.com/hc/en-gb/articles/26905068611730-Vocaster-Two-specifications",
   "page": "https://thephonepath.com/sources/focusrite-vocaster-two/"
  },
  {
   "name": "IK Multimedia AXE I/O",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 400,
   "power_mw_32_ohm": 115.2,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 60.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 30.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 15.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "50ohm=180mW",
   "confidence": "medium",
   "source_url": "https://www.ikmultimedia.com/products/axeio/index.php?p=specs",
   "page": "https://thephonepath.com/sources/ik-multimedia-axe-i-o/"
  },
  {
   "name": "IK Multimedia AXE I/O ONE",
   "type": "interface",
   "tier": "budget",
   "price_usd": 130,
   "power_mw_32_ohm": 25.6,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 13.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 6.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 3.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "50ohm=40mW",
   "confidence": "medium",
   "source_url": "https://www.ikmultimedia.com/products/axeioone/index.php?p=specs",
   "page": "https://thephonepath.com/sources/ik-multimedia-axe-i-o-one/"
  },
  {
   "name": "Lynx Aurora(n)",
   "type": "interface",
   "tier": "highend",
   "price_usd": 3499,
   "power_mw_32_ohm": 1297.3,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 276.7,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 138.4,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 69.2,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://www.lynxstudio.com/downloads/aurora-n/auroran-specifications/",
   "page": "https://thephonepath.com/sources/lynx-aurora-n/"
  },
  {
   "name": "M-Audio AIR 192|14",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 329,
   "power_mw_32_ohm": 160.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 34.1,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 17.1,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 8.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=160mW",
   "confidence": "medium",
   "source_url": "https://m-audio.com/air-192-14",
   "page": "https://thephonepath.com/sources/m-audio-air-192-14/"
  },
  {
   "name": "Merging Anubis",
   "type": "interface",
   "tier": "highend",
   "price_usd": 2790,
   "power_mw_32_ohm": 961.5,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 205.1,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 102.6,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 51.3,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 0.035,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://www.merging.com/uploads/assets/Merging_pdfs/Brochures/Neumann/Technical_Sheet_Merging_Anubis_and_Missions_V1.pdf",
   "page": "https://thephonepath.com/sources/merging-anubis/"
  },
  {
   "name": "MOTU M2",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 219,
   "power_mw_32_ohm": 333.3,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 71.1,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 35.6,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 17.8,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://cdn-data.motu.com/manuals/usb-c-audio/M_Series_User_Guide.pdf",
   "page": "https://thephonepath.com/sources/motu-m2/"
  },
  {
   "name": "MOTU M4",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 279,
   "power_mw_32_ohm": 333.3,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 71.1,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 35.6,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 17.8,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://cdn-data.motu.com/manuals/usb-c-audio/M_Series_User_Guide.pdf",
   "page": "https://thephonepath.com/sources/motu-m4/"
  },
  {
   "name": "MOTU M6",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 499,
   "power_mw_32_ohm": 333.3,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 71.1,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 35.6,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 17.8,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://cdn-data.motu.com/manuals/usb-c-audio/M_Series_User_Guide.pdf",
   "page": "https://thephonepath.com/sources/motu-m6/"
  },
  {
   "name": "MOTU UltraLite-mk5",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 699,
   "power_mw_32_ohm": 470.9,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 100.5,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 50.2,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 25.1,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://motu.com/en-us/products/gen5/ultralite-mk5/specs/",
   "page": "https://thephonepath.com/sources/motu-ultralite-mk5/"
  },
  {
   "name": "PreSonus Quantum ES 2",
   "type": "interface",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 105.5,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 22.5,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 11.2,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 5.6,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://www.presonus.com/products/quantum-es-2-usb-c-audio-interface",
   "page": "https://thephonepath.com/sources/presonus-quantum-es-2/"
  },
  {
   "name": "PreSonus Studio 24c",
   "type": "interface",
   "tier": "budget",
   "price_usd": 149,
   "power_mw_32_ohm": 26.9,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 17.5,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 8.8,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 4.4,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "56ohm=47mW",
   "confidence": "medium",
   "source_url": "https://www.presonus.com/products/Studio-24c/tech-specs",
   "page": "https://thephonepath.com/sources/presonus-studio-24c/"
  },
  {
   "name": "PreSonus Studio 68c",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 299,
   "power_mw_32_ohm": 85.7,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 56.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 28.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 14.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "56ohm=150mW",
   "confidence": "medium",
   "source_url": "https://www.presonus.com/products/Studio-68c/tech-specs",
   "page": "https://thephonepath.com/sources/presonus-studio-68c/"
  },
  {
   "name": "RME ADI-2 DAC FS",
   "type": "interface",
   "tier": "highend",
   "price_usd": 1399,
   "power_mw_32_ohm": 1200.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 256.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 128.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 64.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 2.18,
   "rated_output": "se",
   "published_points": "16ohm=940mW; 32ohm=1200mW",
   "confidence": "medium",
   "source_url": "https://rme-audio.de/adi-2-dac.html",
   "page": "https://thephonepath.com/sources/rme-adi-2-dac-fs/"
  },
  {
   "name": "RME ADI-2 Pro EX",
   "type": "interface",
   "tier": "highend",
   "price_usd": 2499,
   "power_mw_32_ohm": 1900.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 540.4,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 370.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 185.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 2.18,
   "rated_output": "se",
   "published_points": "16ohm=2100mW; 32ohm=1900mW; 300ohm=370mW",
   "confidence": "medium",
   "source_url": "https://rme-audio.de/converter/adi-2-pro-ex.html",
   "page": "https://thephonepath.com/sources/rme-adi-2-pro-ex/"
  },
  {
   "name": "RME ADI-2 Pro FS R",
   "type": "interface",
   "tier": "highend",
   "price_usd": 2199,
   "power_mw_32_ohm": 2970.7,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 633.8,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 316.9,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 158.4,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 0.1,
   "output_noise_uv": 2.18,
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://rme-audio.de/adi-2-pro-fs-be.html",
   "page": "https://thephonepath.com/sources/rme-adi-2-pro-fs-r/"
  },
  {
   "name": "RME Babyface Pro FS",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 899,
   "power_mw_32_ohm": 374.1,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 79.8,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 39.9,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 20.0,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 10,
   "output_noise_uv": 6.3,
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://rme-audio.de/babyface-pro-fs.html",
   "page": "https://thephonepath.com/sources/rme-babyface-pro-fs/"
  },
  {
   "name": "RME Fireface UCX II",
   "type": "interface",
   "tier": "highend",
   "price_usd": 1749,
   "power_mw_32_ohm": 210.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 44.8,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 22.4,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 11.2,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=210mW",
   "confidence": "medium",
   "source_url": "https://rme-audio.de/fireface-ucx-ii.html",
   "page": "https://thephonepath.com/sources/rme-fireface-ucx-ii/"
  },
  {
   "name": "RME Fireface UFX II",
   "type": "interface",
   "tier": "highend",
   "price_usd": 2799,
   "power_mw_32_ohm": 200.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 42.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 21.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 10.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 2,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=200mW",
   "confidence": "medium",
   "source_url": "https://rme-audio.de/fireface-ufx-ii.html",
   "page": "https://thephonepath.com/sources/rme-fireface-ufx-ii/"
  },
  {
   "name": "RME Fireface UFX III",
   "type": "interface",
   "tier": "highend",
   "price_usd": 3199,
   "power_mw_32_ohm": 200.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 42.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 21.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 10.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 2,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=200mW",
   "confidence": "medium",
   "source_url": "https://rme-audio.de/fireface-ufx-3.html",
   "page": "https://thephonepath.com/sources/rme-fireface-ufx-iii/"
  },
  {
   "name": "Roland BRIDGE CAST",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 340,
   "power_mw_32_ohm": 78.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 36.1,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 29.2,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 14.6,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 10,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=78mW; 250ohm=35mW",
   "confidence": "medium",
   "source_url": "https://www.roland.com/global/products/bridge_cast/specifications/",
   "page": "https://thephonepath.com/sources/roland-bridge-cast/"
  },
  {
   "name": "Roland Rubix22",
   "type": "interface",
   "tier": "budget",
   "price_usd": 210,
   "power_mw_32_ohm": 19.3,
   "basis_32_ohm": "source-impedance",
   "power_mw_150_ohm": 14.5,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 9.4,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 5.4,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 47,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "47ohm=20mW",
   "confidence": "medium",
   "source_url": "https://www.roland.com/global/products/rubix22/specifications/",
   "page": "https://thephonepath.com/sources/roland-rubix22/"
  },
  {
   "name": "Roland Rubix44",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 432,
   "power_mw_32_ohm": 19.3,
   "basis_32_ohm": "source-impedance",
   "power_mw_150_ohm": 14.5,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 9.4,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 5.4,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 47,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "47ohm=20mW",
   "confidence": "medium",
   "source_url": "https://www.roland.com/global/products/rubix44/specifications/",
   "page": "https://thephonepath.com/sources/roland-rubix44/"
  },
  {
   "name": "SSL 12",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 599,
   "power_mw_32_ohm": 1183.1,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 252.4,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 126.2,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 63.1,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://support.solidstatelogic.com/hc/en-gb/articles/5568765809309-SSL-12-User-Guide",
   "page": "https://thephonepath.com/sources/ssl-12/"
  },
  {
   "name": "SSL 2 MkII",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 229,
   "power_mw_32_ohm": 374.1,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 79.8,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 39.9,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 20.0,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://support.solidstatelogic.com/hc/en-gb/articles/20859917333789-SSL-2-MKII-User-Guide",
   "page": "https://thephonepath.com/sources/ssl-2-mkii/"
  },
  {
   "name": "SSL 2 Plus MkII",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 299,
   "power_mw_32_ohm": 374.1,
   "basis_32_ohm": "voltage-bound",
   "power_mw_150_ohm": 79.8,
   "basis_150_ohm": "voltage-bound",
   "power_mw_300_ohm": 39.9,
   "basis_300_ohm": "voltage-bound",
   "power_mw_600_ohm": 20.0,
   "basis_600_ohm": "voltage-bound",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "",
   "confidence": "medium",
   "source_url": "https://support.solidstatelogic.com/hc/en-gb/articles/20859917333789-SSL-2-MKII-User-Guide",
   "page": "https://thephonepath.com/sources/ssl-2-plus-mkii/"
  },
  {
   "name": "Steinberg IXO22",
   "type": "interface",
   "tier": "budget",
   "price_usd": 119,
   "power_mw_32_ohm": 32.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 10.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 5.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 2.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "40ohm=40mW",
   "confidence": "medium",
   "source_url": "https://download.steinberg.net/downloads_hardware/IXO/Manuals/IXO22_IXO12_Operation_Manual/IXO22_IXO12_Operation_Manual_English.pdf",
   "page": "https://thephonepath.com/sources/steinberg-ixo22/"
  },
  {
   "name": "Steinberg UR22C",
   "type": "interface",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 12.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 4.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 2.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 1.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "40ohm=15mW",
   "confidence": "medium",
   "source_url": "https://download.steinberg.net/downloads_hardware/UR-C/Manuals/UR22C_Operation_Manual_English.pdf",
   "page": "https://thephonepath.com/sources/steinberg-ur22c/"
  },
  {
   "name": "Steinberg UR24C",
   "type": "interface",
   "tier": "budget",
   "price_usd": 194,
   "power_mw_32_ohm": 80.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 26.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 13.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 6.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "40ohm=100mW",
   "confidence": "medium",
   "source_url": "https://download.steinberg.net/downloads_hardware/UR-C/Manuals/UR24C_Operation_Manual_English.pdf",
   "page": "https://thephonepath.com/sources/steinberg-ur24c/"
  },
  {
   "name": "Steinberg UR44C",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 349,
   "power_mw_32_ohm": 80.0,
   "basis_32_ohm": "extrapolated",
   "power_mw_150_ohm": 26.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 13.3,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 6.7,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "40ohm=100mW",
   "confidence": "medium",
   "source_url": "https://download.steinberg.net/downloads_hardware/UR-C/Manuals/UR44C_Operation_Manual_English.pdf",
   "page": "https://thephonepath.com/sources/steinberg-ur44c/"
  },
  {
   "name": "Tascam US-2x2HR",
   "type": "interface",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 18.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 17.4,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 12.1,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 7.3,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 66,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=18mW",
   "confidence": "medium",
   "source_url": "https://tascam.com/us/product/us-2x2hr/spec",
   "page": "https://thephonepath.com/sources/tascam-us-2x2hr/"
  },
  {
   "name": "Tascam US-4x4HR",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 249,
   "power_mw_32_ohm": 45.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 36.2,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 23.8,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 13.9,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 51.5,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=45mW",
   "confidence": "medium",
   "source_url": "https://tascam.com/us/product/us-4x4hr/spec",
   "page": "https://thephonepath.com/sources/tascam-us-4x4hr/"
  },
  {
   "name": "Universal Audio Volt 1",
   "type": "interface",
   "tier": "budget",
   "price_usd": 149,
   "power_mw_32_ohm": 84.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 28.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 22.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 12.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=84mW; 300ohm=22mW; 600ohm=12mW",
   "confidence": "medium",
   "source_url": "https://help.uaudio.com/hc/en-us/articles/4409522227092-Volt-Specifications",
   "page": "https://thephonepath.com/sources/universal-audio-volt-1/"
  },
  {
   "name": "Universal Audio Volt 2",
   "type": "interface",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 84.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 28.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 22.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 12.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=84mW; 300ohm=22mW; 600ohm=12mW",
   "confidence": "medium",
   "source_url": "https://help.uaudio.com/hc/en-us/articles/4409522227092-Volt-Specifications",
   "page": "https://thephonepath.com/sources/universal-audio-volt-2/"
  },
  {
   "name": "Universal Audio Volt 276",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 299,
   "power_mw_32_ohm": 84.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 28.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 22.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 12.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=84mW; 300ohm=22mW; 600ohm=12mW",
   "confidence": "medium",
   "source_url": "https://help.uaudio.com/hc/en-us/articles/4409522227092-Volt-Specifications",
   "page": "https://thephonepath.com/sources/universal-audio-volt-276/"
  },
  {
   "name": "Universal Audio Volt 476P",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 589,
   "power_mw_32_ohm": 84.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 28.0,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 22.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 12.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=84mW; 300ohm=22mW; 600ohm=12mW",
   "confidence": "medium",
   "source_url": "https://help.uaudio.com/hc/en-us/articles/4409522227092-Volt-Specifications",
   "page": "https://thephonepath.com/sources/universal-audio-volt-476p/"
  },
  {
   "name": "Universal Audio Volt 876",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 999,
   "power_mw_32_ohm": 225.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 79.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 65.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 35.0,
   "basis_600_ohm": "published",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=225mW; 300ohm=65mW; 600ohm=35mW",
   "confidence": "medium",
   "source_url": "https://help.uaudio.com/hc/en-us/articles/41288385879956",
   "page": "https://thephonepath.com/sources/universal-audio-volt-876/"
  },
  {
   "name": "Zoom AMS-22",
   "type": "interface",
   "tier": "budget",
   "price_usd": 100,
   "power_mw_32_ohm": 20.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 6.5,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 3.4,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 1.8,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 10,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=20mW",
   "confidence": "medium",
   "source_url": "https://zoomcorp.com/en/us/audio-interface/audio-interfaces/ams-series/",
   "page": "https://thephonepath.com/sources/zoom-ams-22/"
  },
  {
   "name": "Zoom AMS-24",
   "type": "interface",
   "tier": "budget",
   "price_usd": 150,
   "power_mw_32_ohm": 30.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 9.7,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 5.2,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 2.7,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 10,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=30mW",
   "confidence": "medium",
   "source_url": "https://zoomcorp.com/en/us/audio-interface/audio-interfaces/ams-series/",
   "page": "https://thephonepath.com/sources/zoom-ams-24/"
  },
  {
   "name": "Zoom AMS-44",
   "type": "interface",
   "tier": "budget",
   "price_usd": 200,
   "power_mw_32_ohm": 30.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 9.7,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 5.2,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 2.7,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 10,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=30mW",
   "confidence": "medium",
   "source_url": "https://zoomcorp.com/en/us/audio-interface/audio-interfaces/ams-series/",
   "page": "https://thephonepath.com/sources/zoom-ams-44/"
  },
  {
   "name": "Zoom UAC-232",
   "type": "interface",
   "tier": "midfi",
   "price_usd": 399,
   "power_mw_32_ohm": 147.6,
   "basis_32_ohm": "source-impedance",
   "power_mw_150_ohm": 51.0,
   "basis_150_ohm": "source-impedance",
   "power_mw_300_ohm": 27.5,
   "basis_300_ohm": "source-impedance",
   "power_mw_600_ohm": 14.3,
   "basis_600_ohm": "source-impedance",
   "output_impedance_ohm": 12,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "63ohm=100mW",
   "confidence": "medium",
   "source_url": "https://zoomcorp.com/media/documents/E_UAC-232_.pdf",
   "page": "https://thephonepath.com/sources/zoom-uac-232/"
  },
  {
   "name": "Chord Hugo 2",
   "type": "portable",
   "tier": "highend",
   "price_usd": 2595,
   "power_mw_32_ohm": 740.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 170.8,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 94.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 47.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.025,
   "output_noise_uv": 2.6,
   "rated_output": "se",
   "published_points": "8ohm=1050mW; 32ohm=740mW; 300ohm=94mW",
   "confidence": "medium",
   "source_url": "https://chordelectronics.co.uk/product/hugo-2",
   "page": "https://thephonepath.com/sources/chord-hugo-2/"
  },
  {
   "name": "Chord Mojo 2",
   "type": "portable",
   "tier": "midfi",
   "price_usd": 650,
   "power_mw_32_ohm": 564.4,
   "basis_32_ohm": "interpolated",
   "power_mw_150_ohm": 145.2,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 90.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 45.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 0.06,
   "output_noise_uv": 2.7,
   "rated_output": "se",
   "published_points": "30ohm=600mW; 300ohm=90mW",
   "confidence": "medium",
   "source_url": "https://chordelectronics.co.uk/product/mojo-2",
   "page": "https://thephonepath.com/sources/chord-mojo-2/"
  },
  {
   "name": "FiiO Q15",
   "type": "portable",
   "tier": "midfi",
   "price_usd": 440,
   "power_mw_32_ohm": 625.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 148.9,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 85.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 42.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 3.1,
   "rated_output": "se",
   "published_points": "16ohm=750mW; 32ohm=625mW; 300ohm=85mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/q15_parameters",
   "page": "https://thephonepath.com/sources/fiio-q15/"
  },
  {
   "name": "FiiO Q7",
   "type": "portable",
   "tier": "highend",
   "price_usd": 750,
   "power_mw_32_ohm": 550.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 122.8,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 65.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 32.5,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.2,
   "output_noise_uv": 2.8,
   "rated_output": "se",
   "published_points": "16ohm=750mW; 32ohm=550mW; 300ohm=65mW",
   "confidence": "medium",
   "source_url": "https://www.fiio.com/q7_parameters",
   "page": "https://thephonepath.com/sources/fiio-q7/"
  },
  {
   "name": "iFi hip-dac 3",
   "type": "portable",
   "tier": "budget",
   "price_usd": 199,
   "power_mw_32_ohm": 280.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 59.7,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 29.9,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 14.9,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=280mW",
   "confidence": "high",
   "source_url": "https://downloads.ifi-audio.com/wp-content/uploads/2023/10/hip-dac3-User-Manual_Ver0.15_ok.pdf",
   "page": "https://thephonepath.com/sources/ifi-hip-dac-3/"
  },
  {
   "name": "iFi xDSD Gryphon",
   "type": "portable",
   "tier": "midfi",
   "price_usd": 599,
   "power_mw_32_ohm": 320.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 73.3,
   "basis_150_ohm": "interpolated",
   "power_mw_300_ohm": 40.0,
   "basis_300_ohm": "published",
   "power_mw_600_ohm": 20.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=320mW; 300ohm=40mW",
   "confidence": "medium",
   "source_url": "https://media.ifi-audio.com/wp-content/uploads/2022/05/xDSD-Gryphon-User-Manual-Ver1.35_ok.pdf",
   "page": "https://thephonepath.com/sources/ifi-xdsd-gryphon/"
  },
  {
   "name": "Shanling H2",
   "type": "portable",
   "tier": "budget",
   "price_usd": 169,
   "power_mw_32_ohm": 680.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 145.1,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 72.5,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 36.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "bal",
   "published_points": "32ohm=680mW",
   "confidence": "medium",
   "source_url": "https://en.shanling.com/article/101261",
   "page": "https://thephonepath.com/sources/shanling-h2/"
  },
  {
   "name": "Shanling H7",
   "type": "portable",
   "tier": "highend",
   "price_usd": 829,
   "power_mw_32_ohm": 450.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 96.0,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 48.0,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 24.0,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": 1.0,
   "output_noise_uv": 1.5,
   "rated_output": "se",
   "published_points": "32ohm=450mW",
   "confidence": "medium",
   "source_url": "https://en.shanling.com/article-IntroH7.html",
   "page": "https://thephonepath.com/sources/shanling-h7/"
  },
  {
   "name": "xDuoo XD05 Bal",
   "type": "portable",
   "tier": "midfi",
   "price_usd": 499,
   "power_mw_32_ohm": 1000.0,
   "basis_32_ohm": "published",
   "power_mw_150_ohm": 213.3,
   "basis_150_ohm": "extrapolated",
   "power_mw_300_ohm": 106.7,
   "basis_300_ohm": "extrapolated",
   "power_mw_600_ohm": 53.3,
   "basis_600_ohm": "extrapolated",
   "output_impedance_ohm": "",
   "output_noise_uv": "",
   "rated_output": "se",
   "published_points": "32ohm=1000mW",
   "confidence": "low",
   "source_url": "http://www.xduoo.com/product/xd05-bal/",
   "page": "https://thephonepath.com/sources/xduoo-xd05-bal/"
  }
 ]
}