Both are audio interfaces, $149 against $999. 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 Universal Audio Volt 876 reaches 100 dB on 565 of the 567 models here, the Universal Audio Volt 1 on 558.
| Specification | Universal Audio Volt 1 | Universal Audio Volt 876 |
|---|---|---|
| Power into 32Ω | 84 mW | 225 mW |
| Power into 150Ω | 28 mW | 79 mW |
| Power into 300Ω | 22 mW | 65 mW |
| Power into 600Ω | 12 mW | 35 mW |
| Output impedance | not published | not published |
| Output noise | not published | not published |
| Price | $149 | $999 |
| Headphones it reaches 100 dB on out of 567 | 558 | 565 |
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.
7 headphones reach 100 dB on the Universal Audio Volt 876 but not on the Universal Audio Volt 1 — Moondrop COSMO, Moondrop PARA 2, Moondrop VENUS, 4 more.
558 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: Universal Audio Volt 1 and Universal Audio Volt 876. Or put either against your own headphones in the source comparison tool.