Short answer
Both are desktop amplifiers, $799 against $1099.
The Aune S17 Pro EVO reaches 100 dB on 567 of the 567 models here, the Woo Audio WA6 on 566.
| Specification | Aune S17 Pro EVO | Woo Audio WA6 |
|---|---|---|
| Power into 32Ω | 2.0 W | 580 mW |
| Power into 150Ω | 464 mW | 536 mW |
| Power into 300Ω | 235 mW | 460 mW |
| Power into 600Ω | 117 mW | 400 mW |
| Output impedance | 1 Ω | not published |
| Output noise | not published | not published |
| Price | $799 | $1099 |
| Headphones it reaches 100 dB on out of 567 | 567 | 566 |
Not published means the maker leaves it out, so that axis cannot be compared.
| Balanced | Aune S17 Pro EVO | Woo Audio WA6 |
|---|---|---|
| Socket | XLR4 and 4.4mm | no separate rating |
| Power into 32Ω | 7.5 W | — |
| Power into 300Ω | 918 mW | — |
| Output impedance | 1 Ω | — |
| Output noise | not published | — |
| Headphones it reaches 100 dB on out of 567 | 567 | — |
Only the Aune S17 Pro EVO has a separate balanced rating from its maker; through it, it reaches 100 dB on 567 of the 567 models here. The Woo Audio WA6 may still have a balanced socket — its spec sheet simply gives no figure for one, so there is nothing to put beside it.
| Load | Aune S17 Pro EVO | Woo Audio WA6 |
|---|---|---|
| 32 Ω | Published | Published |
| 150 Ω | Published | Derived |
| 300 Ω | Published | Published |
| 600 Ω | Published | Published |
Both makers publish a power rating. Aune S17 Pro EVO publishes at 32 Ω, at 150 Ω, at 300 Ω and at 600 Ω; Woo Audio WA6 at 32 Ω, at 300 Ω and at 600 Ω. The other rows are worked out from those.
So the two columns are not equally firm row by row: at 150 Ω only the Aune S17 Pro EVO figure is the maker’s own. On those rows the derived number is the one to doubt first.
1 headphone reaches 100 dB on the Aune S17 Pro EVO but not on the Woo Audio WA6 — Symphonium Titan.
566 of the 567 models here reach 100 dB on both.
Headroom is at a 100 dB SPL peak.
The widest gap on the list is the HiFiMAN HE400se: Aune S17 Pro EVO has +23 dB of headroom there against +18 dB. 5 dB is about 3.5 times the power, which matters for peaks rather than for how loud the music sits.
The hiss columns are empty for Aune S17 Pro EVO and Woo Audio WA6 because neither maker publishes no output noise figure.
| Headphone | Impedance | Needs | Aune S17 Pro EVO headroom | Woo Audio WA6 headroom | Aune S17 Pro EVO hiss | Woo Audio WA6 hiss |
|---|---|---|---|---|---|---|
| Shure SE846 | 9 Ω | 0.04 mW | +42 dB | +36 dB | not published | not published |
| Campfire Audio Andromeda 2020 | 9 Ω | 4.0 mW | +22 dB | +16 dB | not published | not published |
| Audeze LCD-2 Classic | 70 Ω | 0.79 mW | +31 dB | +28 dB | not published | not published |
| Beyerdynamic DT 1990 Pro (250Ω) | 250 Ω | 0.63 mW | +27 dB | +29 dB | not published | not published |
| HiFiMAN HE400se | 25 Ω | 7.9 mW | +23 dB | +18 dB | not published | not published |
| Audio-Technica ATH-R70X | 470 Ω | 1.6 mW | +20 dB | +24 dB | not published | not published |
| Sennheiser HD 600 | 300 Ω | 6.6 mW | +16 dB | +18 dB | not published | not published |
| HiFiMAN Susvara | 60 Ω | 50 mW | +13 dB | +10 dB | not published | not published |
The Woo Audio WA6 costs $300 more than the Aune S17 Pro EVO, and on these three axes the money buys nothing: among the 567 models here there is not one that the Woo Audio WA6 handles and the Aune S17 Pro EVO does not — not on power, not on the one-eighth rule, not on hiss. The traffic runs the other way: the cheaper Aune S17 Pro EVO drives one model to 100 dB that the Woo Audio WA6 does not.
Only published figures count here; blank axes are counted separately.
Each in full: Aune S17 Pro EVO and Woo Audio WA6.