Apogee BOOM vs Arturia MiniFuse 4

Short answer

More power: the Apogee BOOM, with 240 mW into 32 Ω; the Arturia MiniFuse 4 has 139 mW. The Apogee BOOM drives 3 headphones to 100 dB that the Arturia MiniFuse 4 cannot (Moondrop COSMO, Symphonium Crimson, Symphonium Helios).
Hiss with sensitive IEMs: cannot be compared — neither maker publishes a noise figure.
Output impedance: 509 headphones are left alone by the Apogee BOOM under the one-eighth rule but coloured by the Arturia MiniFuse 4 (64 Audio Aspire 1, 64 Audio Fourte, 64 Audio Nio, 506 more).
Price: the same, $299.

Both are audio interfaces, both at $299.

The Apogee BOOM reaches 100 dB on 565 of the 567 models here, the Arturia MiniFuse 4 on 562.

Every published figure, next to each other

Specification	Apogee BOOM	Arturia MiniFuse 4
Power into 32Ω	240 mW	139 mW
Power into 150Ω	51 mW	45 mW
Power into 300Ω	26 mW	24 mW
Power into 600Ω	13 mW	12 mW
Output impedance	0.5 Ω	10 Ω
Output noise	not published	not published
Price	$299	$299
Headphones it reaches 100 dB on out of 567	565	562

Not published means the maker leaves it out, so that axis cannot be compared.

Where each power figure comes from

Load	Apogee BOOM	Arturia MiniFuse 4
32 Ω	Published	Derived
150 Ω	Derived	Derived
300 Ω	Derived	Derived
600 Ω	Derived	Derived

Only one of these two columns starts from a power rating. Apogee BOOM publishes one at 32 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 is the only load here at which its maker can be held to a figure.

What the labels mean.

The headphones that tell them apart

3 headphones reach 100 dB on the Apogee BOOM but not on the Arturia MiniFuse 4 — Moondrop COSMO, Symphonium Crimson, Symphonium Helios.

509 headphones are left alone by the Apogee BOOM under the one-eighth rule but coloured by the Arturia MiniFuse 4 (64 Audio Aspire 1, 64 Audio Fourte, 64 Audio Nio, 506 more).

562 of the 567 models here reach 100 dB on both.

Headroom and hiss on 8 models, both sources

Headroom is at a 100 dB SPL peak.

The widest gap on the list is the HiFiMAN HE400se: Apogee BOOM has +14 dB of headroom there against +11 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 Apogee BOOM and Arturia MiniFuse 4 because neither maker publishes no output noise figure.

Headphone	Impedance	Needs	Apogee BOOM headroom	Arturia MiniFuse 4 headroom	Apogee BOOM hiss	Arturia MiniFuse 4 hiss
Shure SE846	9 Ω	0.04 mW	+32 dB	+30 dB damping	not published	not published
Campfire Audio Andromeda 2020	9 Ω	4.0 mW	+12 dB	+10 dB damping	not published	not published
Audeze LCD-2 Classic	70 Ω	0.79 mW	+21 dB	+20 dB damping	not published	not published
Beyerdynamic DT 1990 Pro (250Ω)	250 Ω	0.63 mW	+17 dB	+17 dB	not published	not published
HiFiMAN HE400se	25 Ω	7.9 mW	+14 dB	+11 dB damping	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	+6 dB	not published	not published
HiFiMAN Susvara	60 Ω	50 mW	+4 dB	+2 dB damping	not published	not published

The gap in dollars, against the gap in numbers

These two cost the same, $299, so price settles nothing. Out of the 567 models here, the Apogee BOOM drives 3 models to 100 dB and leaves 509 alone under the one-eighth rule — and on the other side there is no such advantage at all.

Only published figures count here; blank axes are counted separately.