Both are audio interfaces, $249 against $1300. 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 Audient iD48 reaches 100 dB on 566 of the 567 models here, the Audient EVO 8 on 543.
| Specification | Audient EVO 8 | Audient iD48 |
|---|---|---|
| Power into 32Ω | 22 mW | 528 mW |
| Power into 150Ω | 14 mW | 265 mW |
| Power into 300Ω | 11 mW | 168 mW |
| Power into 600Ω | 10 mW | 126 mW |
| Output impedance | 50 Ω | 50 Ω |
| Output noise | not published | not published |
| Price | $249 | $1300 |
| Headphones it reaches 100 dB on out of 567 | 543 | 566 |
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.
23 headphones reach 100 dB on the Audient iD48 but not on the Audient EVO 8 — Dan Clark Audio AEON 2 Closed, Dan Clark Audio AEON 2 Noire, Dan Clark Audio AEON 2 Open, 20 more.
543 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: Audient EVO 8 and Audient iD48. Or put either against your own headphones in the source comparison tool.