Short answer
Both are audio interfaces, both at $299.
The Arturia MiniFuse 4 reaches 100 dB on 562 of the 567 models here, the Universal Audio Volt 276 on 558.
| Specification | Arturia MiniFuse 4 | Universal Audio Volt 276 |
|---|---|---|
| Power into 32Ω | 139 mW | 84 mW |
| Power into 150Ω | 45 mW | 28 mW |
| Power into 300Ω | 24 mW | 22 mW |
| Power into 600Ω | 12 mW | 12 mW |
| Output impedance | 10 Ω | not published |
| Output noise | not published | not published |
| Price | $299 | $299 |
| Headphones it reaches 100 dB on out of 567 | 562 | 558 |
Not published means the maker leaves it out, so that axis cannot be compared.
| Load | Arturia MiniFuse 4 | Universal Audio Volt 276 |
|---|---|---|
| 32 Ω | Derived | Published |
| 150 Ω | Derived | Derived |
| 300 Ω | Derived | Published |
| 600 Ω | Derived | Published |
Only one of these two columns starts from a power rating. Universal Audio Volt 276 publishes one at 32 Ω, at 300 Ω and at 600 Ω; Arturia MiniFuse 4 publishes none at any of these four loads, so its column is worked out from power it published at other loads. Both are arithmetic on a maker’s own figures rather than guesses, and the method used for the Arturia MiniFuse 4 understates rather than flatters — but at 32 Ω, at 300 Ω and at 600 Ω are the only loads here at which its maker can be held to a figure.
4 headphones reach 100 dB on the Arturia MiniFuse 4 but not on the Universal Audio Volt 276 — Moondrop PARA 2, Moondrop VENUS, Symphonium Triton, 1 more.
558 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 Shure SE846: Arturia MiniFuse 4 has +30 dB of headroom there against +28 dB. 2 dB is about 1.7 times the power, which matters for peaks rather than for how loud the music sits.
The hiss columns are empty for Arturia MiniFuse 4 and Universal Audio Volt 276 because neither maker publishes no output noise figure.
| Headphone | Impedance | Needs | Arturia MiniFuse 4 headroom | Universal Audio Volt 276 headroom | Arturia MiniFuse 4 hiss | Universal Audio Volt 276 hiss |
|---|---|---|---|---|---|---|
| Shure SE846 | 9 Ω | 0.04 mW | +30 dB damping | +28 dB | not published | not published |
| Campfire Audio Andromeda 2020 | 9 Ω | 4.0 mW | +10 dB damping | +8 dB | not published | not published |
| Audeze LCD-2 Classic | 70 Ω | 0.79 mW | +20 dB damping | +18 dB | not published | not published |
| Beyerdynamic DT 1990 Pro (250Ω) | 250 Ω | 0.63 mW | +17 dB | +16 dB | not published | not published |
| HiFiMAN HE400se | 25 Ω | 7.9 mW | +11 dB damping | +9 dB | not published | not published |
| Audio-Technica ATH-R70X | 470 Ω | 1.6 mW | +10 dB | +10 dB | not published | not published |
| Sennheiser HD 600 | 300 Ω | 6.6 mW | +6 dB | +5 dB | not published | not published |
| HiFiMAN Susvara | 60 Ω | 50 mW | +2 dB damping | +0 dB | not published | not published |
These two cost the same, $299, so price settles nothing. Out of the 567 models here, the Arturia MiniFuse 4 drives 4 models to 100 dB — and on the other side there is no such advantage at all.
Only published figures count here; blank axes are counted separately.
Each in full: Arturia MiniFuse 4 and Universal Audio Volt 276.