Fosi Audio
The Fosi Audio MC331 is a compact 2‑channel hybrid tube amplifier that integrates a DAC, preamp, power amp and headphone amp in a single aluminum chassis. It delivers up to 105 W per channel with low distortion and offers a wide range of digital and analog inputs, making it a versatile desktop solution for audiophiles seeking tube warmth.
Pros
Current
$131.99
Average
$122.92
Lowest
$103.99
Highest
$139.99
Lower = better sales rank
CyberPower
Pocketalker
Fosi Audio
AIYIMA
Fosi Audio
Rockville
KGUSS
S.M.S.L
AIYIMA
Fosi Audio
KGUSS
Fosi Audio
AIYIMA
Fosi Audio
WiiM
Fosi Audio
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From Expert Reviews
Praised by Experts
From User Reviews
Users Love
Expert Opinion
Professional reviewers consider the MC331 a remarkable value, delivering high power output, low distortion, and a blend of tube warmth with modern digital connectivity. They commend its all‑in‑one functionality, tone controls, and visual VU meter, positioning it as a strong contender in the compact integrated amp market.
What Users Say
Everyday users consistently appreciate the build quality, versatile inputs, clean sound, and the retro‑tube aesthetic with a VU meter. The compact size and ability to drive both speakers and headphones are frequently mentioned as major positives.
Common Complaints
Limited information in the source data; no major recurring complaints were identified.
What People Are Saying
“delivers up to 105 W × 2 into 4 Ω with ≤ 0.03% THD and ≥ 100 dB SNR”
“sufficiently powerful for such a tiny device”
“capable in the sound quality department with clean, interference-free sound.”
“provided a massive difference in bass/treble with complete customization of the sound style and profile.”
“visual appeal combining retro vacuum tube aesthetics with the VU meter for both auditory and visual pleasure”
How It Compares
While specific competitor data is not provided, the MC331 stands out for its combination of tube amplification, integrated DAC, and extensive connectivity in a compact, affordable package. Its power output and low distortion are comparable to higher‑priced integrated amps, and its visual VU meter and replaceable tubes add a unique retro appeal not commonly found in competing solid‑state units.
