Both are desktop DAC/amps, $75 against $100. This page puts them side by side on the only three things a maker can be held to — power, output impedance and noise — and then asks the question that actually matters: which headphones do they treat differently?
The Aiyima A2 Pro reaches 100 dB on 563 of the 567 models here, the Creative Sound Blaster X3 on 553.
| Specification | Aiyima A2 Pro | Creative Sound Blaster X3 |
|---|---|---|
| Power into 32Ω | 150 mW | 45 mW |
| Power into 150Ω | 32 mW | 35 mW |
| Power into 300Ω | 16 mW | 21 mW |
| Power into 600Ω | 8.0 mW | 14 mW |
| Output impedance | not published | not published |
| Output noise | not published | not published |
| Price | $75 | $100 |
| Headphones it reaches 100 dB on out of 567 | 563 | 553 |
A figure marked not published is missing from the maker’s own material, which is not the same as being good or bad. Where one of these two publishes a number and the other does not, the comparison on that axis cannot be made at all — and saying so is more useful than guessing.
10 headphones reach 100 dB on the Aiyima A2 Pro but not on the Creative Sound Blaster X3 — HiFiMAN HE-6se V2, HiFiMAN HE6 Remastered, HiFiMAN Susvara, 7 more.
553 of the 567 models here reach 100 dB on both. That is a power count and nothing more; whether either source suits a given headphone also depends on the two lines above.
Each has a page of its own with every power figure traced to what the maker published and a full headphone list: Aiyima A2 Pro and Creative Sound Blaster X3. Or put either against your own headphones in the source comparison tool.