The Dan Clark Audio Stealth is 23Ω at 90.0 dB/mW; the Meze Empyrean is 32Ω at 100.0 dB (no figure from the maker at all). This page is only about what they ask of an amplifier — not how they sound, which no specification on either sheet can tell you.
The Dan Clark Audio Stealth needs 10.0 dB more than the Meze Empyrean to reach the same loudness — 10 mW against 1.0 mW.
| Specification | Dan Clark Audio Stealth | Meze Empyrean |
|---|---|---|
| Impedance | 23 Ω | 32 Ω |
| Sensitivity | 90.0 dB/mW | 100.0 dB |
| Sensitivity (voltage) | 106.4 dB/V | 114.9 dB/V |
| Power for 100 dB | 10 mW | 1.0 mW |
| Voltage for 100 dB | 0.48 V | 0.18 V |
| Current for 100 dB | 20.9 mA | 5.6 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 2.88 Ω | 4.00 Ω |
| Sources that reach 100 dB out of 280 | 279 | 280 |
One caution before reading the rows. For Meze Empyrean the maker publishes no sensitivity figure at all. The number in the table was collected when this database was first built and has never been traced to a manufacturer document, so treat every row below it as an estimate rather than a specification.
1 of the 280 sources has the power for the Meze Empyrean but not for the Dan Clark Audio Stealth — Steinberg UR22C.
1 source stays below the audible-hiss threshold with the Dan Clark Audio Stealth but crosses it with the Meze Empyrean (Schiit Mjolnir 3).
279 of the 280 sources here reach 100 dB on both. That count is about power only — the output-impedance and hiss lines above are separate questions, and a source can pass this one and fail those.
The gap between these two in decibels does not change with volume — it is a property of the two headphones. What changes is the size of the numbers, and it changes fast: every 10 dB costs ten times the power. The row that matters is the one nearest the level you listen at, and for most people that is nearer the top of this table than the bottom.
The Dan Clark Audio Stealth is more demanding than 85% of the 567 non-electrostatic models in this database; the Meze Empyrean than 54%. Both figures use the same measure as the rest of the site: whichever runs out first against a 2 V, 100 mW dongle, voltage or power.
| dB SPL | Dan Clark Audio Stealth power | Dan Clark Audio Stealth voltage | Meze Empyrean power | Meze Empyrean voltage |
|---|---|---|---|---|
| 80 | 0.10 mW | 48 mV | 0.01 mW | 18 mV |
| 85 | 0.32 mW | 85 mV | 0.03 mW | 32 mV |
| 90 | 1.0 mW | 0.15 V | 0.10 mW | 57 mV |
| 95 | 3.2 mW | 0.27 V | 0.32 mW | 0.10 V |
| 100 | 10 mW | 0.48 V | 1.0 mW | 0.18 V |
| 105 | 32 mW | 0.85 V | 3.2 mW | 0.32 V |
105 dB is included because forum power figures are usually quoted there or higher. It is also a level that damages hearing in minutes — how many minutes is its own calculator.
| Source | Price | Headroom, Dan Clark Audio Stealth | Headroom, Meze Empyrean | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 3.3 dB | 14.8 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 13.3 dB | 23.0 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR11 | $36 | 5.5 dB | 14.8 dB | 0.5 Ω | 8.0 µV |
Of the 280 sources here, 279 reach 100 dB on both. That is the easy axis. 69 of them also publish an output impedance low enough for both under the one-eighth rule and a noise figure that stays below the audible-hiss threshold with both — the rest either fail one of those or never printed the number at all, and 207 of them are in the second group.
The cheapest of the 69 is the JadeAudio JA11, at $20. It leaves 3.3 dB of headroom on the Dan Clark Audio Stealth and 14.8 dB on the Meze Empyrean, its output impedance is 0.5 Ω against a one-eighth limit of 2.88 Ω and 4.00 Ω, and its noise figure puts the hiss floor 29 dB and 20 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
Cheapest that satisfies three published numbers is not the same as best, and none of it is about how either headphone sounds. To put either model against a source this page does not mention, or to change the target loudness, use the amplifier matcher.
Each model has a page of its own with the full source list, the hiss estimate and the provenance of every figure above: Dan Clark Audio Stealth and Meze Empyrean. Each figure on this page is labelled on those pages with where it came from, including the ones Dan Clark Audio and Meze never published — what Dan Clark Audio publishes and what Meze publishes, both counted.