Short answer
Both are desktop DAC/amps, $319 against $285.
The Aune X1s GT reaches 100 dB on 565 of the 567 models here, the Creative Sound Blaster X5 on 561.
| Specification | Aune X1s GT | Creative Sound Blaster X5 |
|---|---|---|
| Power into 32Ω | 320 mW | 64 mW |
| Power into 150Ω | 68 mW | 112 mW |
| Power into 300Ω | 34 mW | 57 mW |
| Power into 600Ω | 17 mW | 29 mW |
| Output impedance | not published | 1 Ω |
| Output noise | not published | not published |
| Price | $319 | $285 |
| Headphones it reaches 100 dB on out of 567 | 565 | 561 |
Not published means the maker leaves it out, so that axis cannot be compared.
| Balanced | Aune X1s GT | Creative Sound Blaster X5 |
|---|---|---|
| Socket | 4.4mm | 4.4mm |
| Power into 32Ω | 1.2 W | 107 mW derived |
| Power into 300Ω | 128 mW derived | 214 mW derived |
| Output impedance | not published | not published |
| Output noise | not published | not published |
| Headphones it reaches 100 dB on out of 567 | 567 | 561 |
Through the balanced sockets the Aune X1s GT reaches 100 dB on 567 of the 567 models here and the Creative Sound Blaster X5 on 561. Derived figures are worked out from the loads the maker did publish.
| Load | Aune X1s GT | Creative Sound Blaster X5 |
|---|---|---|
| 32 Ω | Published | Derived |
| 150 Ω | Derived | Published |
| 300 Ω | Derived | Derived |
| 600 Ω | Derived | Published |
Both makers publish a power rating. Aune X1s GT publishes at 32 Ω; Creative Sound Blaster X5 at 150 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 32 Ω only the Aune X1s GT figure is the maker’s own and at 150 Ω and at 600 Ω only the Creative Sound Blaster X5 figure is the maker’s own. On those rows the derived number is the one to doubt first.
4 headphones reach 100 dB on the Aune X1s GT but not on the Creative Sound Blaster X5 — Moondrop COSMO, Symphonium Crimson, Symphonium Helios, 1 more.
561 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 X1s GT has +15 dB of headroom there against +9 dB. 6 dB is about 4.1 times the power, which matters for peaks rather than for how loud the music sits.
The hiss columns are empty for Aune X1s GT and Creative Sound Blaster X5 because neither maker publishes no output noise figure.
| Headphone | Impedance | Needs | Aune X1s GT headroom | Creative Sound Blaster X5 headroom | Aune X1s GT hiss | Creative Sound Blaster X5 hiss |
|---|---|---|---|---|---|---|
| Shure SE846 | 9 Ω | 0.04 mW | +34 dB | +29 dB | not published | not published |
| Campfire Audio Andromeda 2020 | 9 Ω | 4.0 mW | +14 dB | +9 dB | not published | not published |
| Audeze LCD-2 Classic | 70 Ω | 0.79 mW | +23 dB | +20 dB | not published | not published |
| Beyerdynamic DT 1990 Pro (250Ω) | 250 Ω | 0.63 mW | +18 dB | +20 dB | not published | not published |
| HiFiMAN HE400se | 25 Ω | 7.9 mW | +15 dB | +9 dB | not published | not published |
| Audio-Technica ATH-R70X | 470 Ω | 1.6 mW | +11 dB | +14 dB | not published | not published |
| Sennheiser HD 600 | 300 Ω | 6.6 mW | +7 dB | +9 dB | not published | not published |
| HiFiMAN Susvara | 60 Ω | 50 mW | +5 dB | +2 dB | not published | not published |
The Aune X1s GT costs $34 more than the Creative Sound Blaster X5. Out of the 567 models here, that difference buys 4 more models driven to 100 dB.
Nothing runs the other way: there is no axis here on which the cheaper of the two does better.
Only published figures count here; blank axes are counted separately.
Each in full: Aune X1s GT and Creative Sound Blaster X5.