The Elysian Acoustic Labs Annihilator 2026 is 22Ω at 99.4 dB/mW; the Elysian Acoustic Labs Apostle 2026 is 10Ω at 97.0 dB/mW. 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 Apostle 2026 needs 2.4 dB more than the Annihilator 2026 to reach the same loudness — 2.0 mW against 1.1 mW.
| Specification | Annihilator 2026 | Apostle 2026 |
|---|---|---|
| Impedance | 22 Ω | 10 Ω |
| Sensitivity | 99.4 dB/mW | 97.0 dB/mW |
| Sensitivity (voltage) | 116.0 dB/V | 117.0 dB/V |
| Power for 100 dB | 1.1 mW | 2.0 mW |
| Voltage for 100 dB | 0.16 V | 0.14 V |
| Current for 100 dB | 7.2 mA | 14.1 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 2.75 Ω | 1.25 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
Every source in the database that drives one of them drives the other. On power, the choice between these two changes nothing about what amplifier you need.
8 sources are low enough in output impedance for the Annihilator 2026 under the one-eighth rule but not for the Apostle 2026 (FiiO KA13, Schiit Vali 2+, Astell&Kern HC3, 5 more).
280 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 Annihilator 2026 is more demanding than 49% of the 567 non-electrostatic models in this database; the Apostle 2026 than 44%. 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 | Annihilator 2026 power | Annihilator 2026 voltage | Apostle 2026 power | Apostle 2026 voltage |
|---|---|---|---|---|
| 80 | 0.01 mW | 16 mV | 0.02 mW | 14 mV |
| 85 | 0.04 mW | 28 mV | 0.06 mW | 25 mV |
| 90 | 0.11 mW | 50 mV | 0.20 mW | 45 mV |
| 95 | 0.36 mW | 89 mV | 0.63 mW | 79 mV |
| 100 | 1.1 mW | 0.16 V | 2.0 mW | 0.14 V |
| 105 | 3.6 mW | 0.28 V | 6.3 mW | 0.25 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, Annihilator 2026 | Headroom, Apostle 2026 | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 12.5 dB | 6.7 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 22.8 dB | 18.9 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR11 | $36 | 15.0 dB | 11.5 dB | 0.5 Ω | 8.0 µV |
Of the 280 sources here, 280 reach 100 dB on both. That is the easy axis. 65 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 208 of them are in the second group.
The cheapest of the 65 is the JadeAudio JA11, at $20. It leaves 12.5 dB of headroom on the Annihilator 2026 and 6.7 dB on the Apostle 2026, its output impedance is 0.5 Ω against a one-eighth limit of 2.75 Ω and 1.25 Ω, and its noise figure puts the hiss floor 19 dB and 18 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.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| Annihilator 2026 | 20hz - 45khz | not printed | not printed |
| Apostle 2026 | 20Hz~ 40kHz | not printed | not printed |
Elysian Acoustic Labs prints 20hz - 45khz for the Annihilator 2026 and 20Hz~ 40kHz for the Apostle 2026.
Neither range has a tolerance printed beside it, and that is the whole of what this section can tell you. A wider range on one sheet is not deeper bass or more treble on that headphone: without a tolerance, neither number says how loud either model is at the ends of its own range, so the difference between the two is a difference between two pieces of marketing copy. A ±dB figure is what turns a range into a specification, and of the 490 models whose maker prints a range, 58 print it.
None of this is a measurement. What each maker publishes, and what it is worth, is set out in the frequency response audit.
Each model has a page of its own with the full source list, the hiss estimate and the provenance of every figure above: Elysian Acoustic Labs Annihilator 2026 and Elysian Acoustic Labs Apostle 2026. Every figure on this page comes from what Elysian Acoustic Labs published, or is derived from it — what that maker publishes, counted.