{
 "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": [
  {
   "brand": "64 Audio",
   "headphones": 10,
   "sources": 0,
   "sensitivity_stated_by_maker": 10,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 10,
   "facts_counted": 10,
   "share_from_maker_pct": 100.0,
   "page": "https://thephonepath.com/brands/64-audio/"
  },
  {
   "brand": "7Hz",
   "headphones": 5,
   "sources": 0,
   "sensitivity_stated_by_maker": 3,
   "sensitivity_unit_missing": 1,
   "sensitivity_not_published": 1,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 0,
   "facts_counted": 5,
   "share_from_maker_pct": 0.0,
   "page": "https://thephonepath.com/brands/7hz/"
  },
  {
   "brand": "Abyss",
   "headphones": 5,
   "sources": 0,
   "sensitivity_stated_by_maker": 4,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 1,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 4,
   "facts_counted": 5,
   "share_from_maker_pct": 80.0,
   "page": "https://thephonepath.com/brands/abyss/"
  },
  {
   "brand": "AFUL",
   "headphones": 3,
   "sources": 0,
   "sensitivity_stated_by_maker": 1,
   "sensitivity_unit_missing": 2,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 1,
   "facts_counted": 3,
   "share_from_maker_pct": 33.3,
   "page": "https://thephonepath.com/brands/aful/"
  },
  {
   "brand": "Aiyima",
   "headphones": 0,
   "sources": 1,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 1,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 1,
   "facts_counted": 3,
   "share_from_maker_pct": 33.3,
   "page": "https://thephonepath.com/brands/aiyima/"
  },
  {
   "brand": "AKG",
   "headphones": 14,
   "sources": 0,
   "sensitivity_stated_by_maker": 13,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 1,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 13,
   "facts_counted": 14,
   "share_from_maker_pct": 92.9,
   "page": "https://thephonepath.com/brands/akg/"
  },
  {
   "brand": "Apogee",
   "headphones": 0,
   "sources": 3,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 3,
   "sources_with_output_impedance": 2,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 5,
   "facts_counted": 9,
   "share_from_maker_pct": 55.6,
   "page": "https://thephonepath.com/brands/apogee/"
  },
  {
   "brand": "Apple",
   "headphones": 0,
   "sources": 2,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 0,
   "facts_counted": 6,
   "share_from_maker_pct": 0.0,
   "page": "https://thephonepath.com/brands/apple/"
  },
  {
   "brand": "ART",
   "headphones": 0,
   "sources": 1,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 1,
   "sources_with_output_impedance": 1,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 2,
   "facts_counted": 3,
   "share_from_maker_pct": 66.7,
   "page": "https://thephonepath.com/brands/art/"
  },
  {
   "brand": "Arturia",
   "headphones": 0,
   "sources": 4,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 4,
   "sources_with_output_impedance": 4,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 8,
   "facts_counted": 12,
   "share_from_maker_pct": 66.7,
   "page": "https://thephonepath.com/brands/arturia/"
  },
  {
   "brand": "Astell&Kern",
   "headphones": 0,
   "sources": 4,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 4,
   "sources_with_output_impedance": 4,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 8,
   "facts_counted": 12,
   "share_from_maker_pct": 66.7,
   "page": "https://thephonepath.com/brands/astell-and-kern/"
  },
  {
   "brand": "Audeze",
   "headphones": 21,
   "sources": 0,
   "sensitivity_stated_by_maker": 20,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 1,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 20,
   "facts_counted": 21,
   "share_from_maker_pct": 95.2,
   "page": "https://thephonepath.com/brands/audeze/"
  },
  {
   "brand": "Audient",
   "headphones": 0,
   "sources": 11,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 11,
   "sources_with_output_impedance": 8,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 19,
   "facts_counted": 33,
   "share_from_maker_pct": 57.6,
   "page": "https://thephonepath.com/brands/audient/"
  },
  {
   "brand": "Audio-Technica",
   "headphones": 27,
   "sources": 0,
   "sensitivity_stated_by_maker": 26,
   "sensitivity_unit_missing": 1,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 26,
   "facts_counted": 27,
   "share_from_maker_pct": 96.3,
   "page": "https://thephonepath.com/brands/audio-technica/"
  },
  {
   "brand": "Aune",
   "headphones": 0,
   "sources": 2,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 2,
   "sources_with_output_impedance": 1,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 3,
   "facts_counted": 6,
   "share_from_maker_pct": 50.0,
   "page": "https://thephonepath.com/brands/aune/"
  },
  {
   "brand": "Austrian Audio",
   "headphones": 8,
   "sources": 0,
   "sensitivity_stated_by_maker": 7,
   "sensitivity_unit_missing": 1,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 7,
   "facts_counted": 8,
   "share_from_maker_pct": 87.5,
   "page": "https://thephonepath.com/brands/austrian-audio/"
  },
  {
   "brand": "Bang & Olufsen",
   "headphones": 2,
   "sources": 0,
   "sensitivity_stated_by_maker": 2,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 2,
   "facts_counted": 2,
   "share_from_maker_pct": 100.0,
   "page": "https://thephonepath.com/brands/bang-and-olufsen/"
  },
  {
   "brand": "Benchmark",
   "headphones": 0,
   "sources": 2,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 2,
   "sources_with_output_impedance": 2,
   "sources_with_noise_figure": 1,
   "facts_from_maker": 5,
   "facts_counted": 6,
   "share_from_maker_pct": 83.3,
   "page": "https://thephonepath.com/brands/benchmark/"
  },
  {
   "brand": "Beyerdynamic",
   "headphones": 36,
   "sources": 0,
   "sensitivity_stated_by_maker": 13,
   "sensitivity_unit_missing": 20,
   "sensitivity_not_published": 3,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 13,
   "facts_counted": 36,
   "share_from_maker_pct": 36.1,
   "page": "https://thephonepath.com/brands/beyerdynamic/"
  },
  {
   "brand": "BLON",
   "headphones": 1,
   "sources": 0,
   "sensitivity_stated_by_maker": 1,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 0,
   "facts_counted": 1,
   "share_from_maker_pct": 0.0,
   "page": "https://thephonepath.com/brands/blon/"
  },
  {
   "brand": "Bottlehead",
   "headphones": 0,
   "sources": 1,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 1,
   "sources_with_output_impedance": 1,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 2,
   "facts_counted": 3,
   "share_from_maker_pct": 66.7,
   "page": "https://thephonepath.com/brands/bottlehead/"
  },
  {
   "brand": "Bowers & Wilkins",
   "headphones": 1,
   "sources": 0,
   "sensitivity_stated_by_maker": 1,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 1,
   "facts_counted": 1,
   "share_from_maker_pct": 100.0,
   "page": "https://thephonepath.com/brands/bowers-and-wilkins/"
  },
  {
   "brand": "Bryston",
   "headphones": 0,
   "sources": 1,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 1,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 1,
   "facts_counted": 3,
   "share_from_maker_pct": 33.3,
   "page": "https://thephonepath.com/brands/bryston/"
  },
  {
   "brand": "Burson",
   "headphones": 0,
   "sources": 1,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 1,
   "sources_with_output_impedance": 1,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 2,
   "facts_counted": 3,
   "share_from_maker_pct": 66.7,
   "page": "https://thephonepath.com/brands/burson/"
  },
  {
   "brand": "Cambridge Audio",
   "headphones": 0,
   "sources": 1,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 1,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 1,
   "facts_counted": 3,
   "share_from_maker_pct": 33.3,
   "page": "https://thephonepath.com/brands/cambridge-audio/"
  },
  {
   "brand": "Campfire Audio",
   "headphones": 10,
   "sources": 0,
   "sensitivity_stated_by_maker": 5,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 5,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 5,
   "facts_counted": 10,
   "share_from_maker_pct": 50.0,
   "page": "https://thephonepath.com/brands/campfire-audio/"
  },
  {
   "brand": "Cayin",
   "headphones": 0,
   "sources": 5,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 4,
   "sources_with_output_impedance": 3,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 7,
   "facts_counted": 15,
   "share_from_maker_pct": 46.7,
   "page": "https://thephonepath.com/brands/cayin/"
  },
  {
   "brand": "CCA",
   "headphones": 2,
   "sources": 0,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 2,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 0,
   "facts_counted": 2,
   "share_from_maker_pct": 0.0,
   "page": "https://thephonepath.com/brands/cca/"
  },
  {
   "brand": "Chord",
   "headphones": 0,
   "sources": 3,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 3,
   "sources_with_output_impedance": 3,
   "sources_with_noise_figure": 3,
   "facts_from_maker": 9,
   "facts_counted": 9,
   "share_from_maker_pct": 100.0,
   "page": "https://thephonepath.com/brands/chord/"
  },
  {
   "brand": "Creative",
   "headphones": 0,
   "sources": 2,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 2,
   "sources_with_output_impedance": 1,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 3,
   "facts_counted": 6,
   "share_from_maker_pct": 50.0,
   "page": "https://thephonepath.com/brands/creative/"
  },
  {
   "brand": "Dan Clark Audio",
   "headphones": 11,
   "sources": 0,
   "sensitivity_stated_by_maker": 10,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 1,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 10,
   "facts_counted": 11,
   "share_from_maker_pct": 90.9,
   "page": "https://thephonepath.com/brands/dan-clark-audio/"
  },
  {
   "brand": "ddHiFi",
   "headphones": 0,
   "sources": 7,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 7,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 7,
   "facts_counted": 21,
   "share_from_maker_pct": 33.3,
   "page": "https://thephonepath.com/brands/ddhifi/"
  },
  {
   "brand": "Denon",
   "headphones": 5,
   "sources": 0,
   "sensitivity_stated_by_maker": 4,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 1,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 4,
   "facts_counted": 5,
   "share_from_maker_pct": 80.0,
   "page": "https://thephonepath.com/brands/denon/"
  },
  {
   "brand": "DITA Audio",
   "headphones": 2,
   "sources": 0,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 2,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 0,
   "facts_counted": 2,
   "share_from_maker_pct": 0.0,
   "page": "https://thephonepath.com/brands/dita-audio/"
  },
  {
   "brand": "Drop",
   "headphones": 1,
   "sources": 0,
   "sensitivity_stated_by_maker": 1,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 1,
   "facts_counted": 1,
   "share_from_maker_pct": 100.0,
   "page": "https://thephonepath.com/brands/drop/"
  },
  {
   "brand": "Dunu",
   "headphones": 12,
   "sources": 1,
   "sensitivity_stated_by_maker": 6,
   "sensitivity_unit_missing": 6,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 1,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 7,
   "facts_counted": 15,
   "share_from_maker_pct": 46.7,
   "page": "https://thephonepath.com/brands/dunu/"
  },
  {
   "brand": "EarMen",
   "headphones": 0,
   "sources": 1,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 1,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 1,
   "facts_counted": 3,
   "share_from_maker_pct": 33.3,
   "page": "https://thephonepath.com/brands/earmen/"
  },
  {
   "brand": "EarStudio",
   "headphones": 0,
   "sources": 1,
   "sensitivity_stated_by_maker": 0,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 0,
   "facts_counted": 3,
   "share_from_maker_pct": 0.0,
   "page": "https://thephonepath.com/brands/earstudio/"
  },
  {
   "brand": "Elysian Acoustic Labs",
   "headphones": 5,
   "sources": 0,
   "sensitivity_stated_by_maker": 5,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 5,
   "facts_counted": 5,
   "share_from_maker_pct": 100.0,
   "page": "https://thephonepath.com/brands/elysian-acoustic-labs/"
  },
  {
   "brand": "EPZ",
   "headphones": 4,
   "sources": 2,
   "sensitivity_stated_by_maker": 1,
   "sensitivity_unit_missing": 3,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 2,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 1,
   "facts_from_maker": 4,
   "facts_counted": 10,
   "share_from_maker_pct": 40.0,
   "page": "https://thephonepath.com/brands/epz/"
  },
  {
   "brand": "Etymotic",
   "headphones": 6,
   "sources": 0,
   "sensitivity_stated_by_maker": 6,
   "sensitivity_unit_missing": 0,
   "sensitivity_not_published": 0,
   "sensitivity_inconsistent": 0,
   "sources_with_published_power": 0,
   "sources_with_output_impedance": 0,
   "sources_with_noise_figure": 0,
   "facts_from_maker": 6,
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}