FiiO SnowSky Tiny A vs Kiwi Ears Allegro Mini

Short answer

Power: about the same. The FiiO SnowSky Tiny A has 34 mW into 32 Ω, the Kiwi Ears Allegro Mini 30 mW. The FiiO SnowSky Tiny A drives 3 headphones to 100 dB that the Kiwi Ears Allegro Mini cannot (Kinera Freya Vanir, Symphonium Giant, Thieaudio Hype 10).
Hiss with sensitive IEMs: cannot be compared — the maker of the FiiO SnowSky Tiny A publishes no noise figure.
Price: the FiiO SnowSky Tiny A costs $2 less, and wherever both makers publish a figure the Kiwi Ears Allegro Mini shows no advantage for the extra money.

Both are dongles, $22 against $24.

The FiiO SnowSky Tiny A reaches 100 dB on 550 of the 567 models here, the Kiwi Ears Allegro Mini on 547.

Side by side

Every published figure, next to each other

Specification	FiiO SnowSky Tiny A	Kiwi Ears Allegro Mini
Power into 32Ω	34 mW	30 mW
Power into 150Ω	7.3 mW	6.4 mW
Power into 300Ω	3.6 mW	3.2 mW
Power into 600Ω	1.8 mW	1.6 mW
Output impedance	0.5 Ω	not published
Output noise	not published	3.0 µV
Price	$22	$24
Headphones it reaches 100 dB on out of 567	550	547

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

How solid these numbers are

Where each power figure comes from

Load	FiiO SnowSky Tiny A	Kiwi Ears Allegro Mini
32 Ω	Published	Published
150 Ω	Derived	Derived
300 Ω	Derived	Derived
600 Ω	Derived	Derived

Both makers publish a power rating. FiiO SnowSky Tiny A publishes at 32 Ω; Kiwi Ears Allegro Mini at 32 Ω. The other rows are worked out from those.

The two publish at the same loads, which is the one case where the rows of this table can be read straight across.

What the labels mean.

What separates them

The headphones that tell them apart

3 headphones reach 100 dB on the FiiO SnowSky Tiny A but not on the Kiwi Ears Allegro Mini — Kinera Freya Vanir, Symphonium Giant, Thieaudio Hype 10.

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

On real headphones

Headroom and hiss on 8 models, both sources

Headroom is at a 100 dB SPL peak.

The widest gap on the list is the Shure SE846: FiiO SnowSky Tiny A has +28 dB of headroom there against +23 dB. 5 dB is about 3 times the power, which matters for peaks rather than for how loud the music sits.

The hiss columns are empty for FiiO SnowSky Tiny A because that maker publishes no output noise figure.

Headphone	Impedance	Needs	FiiO SnowSky Tiny A headroom	Kiwi Ears Allegro Mini headroom	FiiO SnowSky Tiny A hiss	Kiwi Ears Allegro Mini hiss
Shure SE846	9 Ω	0.04 mW	+28 dB	+23 dB	not published	24 dB
Campfire Audio Andromeda 2020	9 Ω	4.0 mW	+8 dB	+3 dB	not published	4 dB
Audeze LCD-2 Classic	70 Ω	0.79 mW	+13 dB	+12 dB	not published	2 dB
Beyerdynamic DT 1990 Pro (250Ω)	250 Ω	0.63 mW	+8 dB	+8 dB	not published	-2 dB
HiFiMAN HE400se	25 Ω	7.9 mW	+7 dB	+5 dB	not published	-3 dB
Audio-Technica ATH-R70X	470 Ω	1.6 mW	+2 dB	+1 dB	not published	-9 dB
Sennheiser HD 600	300 Ω	6.6 mW	-3 dB	-3 dB	not published	-13 dB
HiFiMAN Susvara	60 Ω	50 mW	-4 dB	-5 dB	not published	-15 dB

What the price difference buys

The gap in dollars, against the gap in numbers

The Kiwi Ears Allegro Mini costs $2 more than the FiiO SnowSky Tiny A, and on these three axes the money buys nothing: among the 567 models here there is not one that the Kiwi Ears Allegro Mini handles and the FiiO SnowSky Tiny A does not — not on power, not on the one-eighth rule, not on hiss. The traffic runs the other way: the cheaper FiiO SnowSky Tiny A drives 3 models to 100 dB that the Kiwi Ears Allegro Mini does not.

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

Each in full: FiiO SnowSky Tiny A and Kiwi Ears Allegro Mini.