Both are audio interfaces, $349 against $329. 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 M-Audio AIR 192|14 reaches 100 dB on 563 of the 567 models here, the Audient iD14 MkII on 561.
| Specification | Audient iD14 MkII | M-Audio AIR 192|14 |
|---|---|---|
| Power into 32Ω | 112 mW | 160 mW |
| Power into 150Ω | 75 mW | 34 mW |
| Power into 300Ω | 55 mW | 17 mW |
| Power into 600Ω | 50 mW | 8.5 mW |
| Output impedance | not published | not published |
| Output noise | not published | not published |
| Price | $349 | $329 |
| Headphones it reaches 100 dB on out of 567 | 561 | 563 |
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.
2 headphones reach 100 dB on the M-Audio AIR 192|14 but not on the Audient iD14 MkII — Moondrop COSMO, Symphonium Zenith.
561 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 iD14 MkII and M-Audio AIR 192|14. Or put either against your own headphones in the source comparison tool.