Fosi Audio BT20A ProvsFosi Audio MC101
A detailed side-by-side comparison of the Fosi Audio BT20A Pro and Fosi Audio MC101 — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Fosi Audio BT20A Pro
Fosi Audio MC101
Class
D
D
Chipset
TI TPA3255
TI TPA3116D2
Power
2 × 300W @ 4Ω
2 × 100W (Max claim) / Realistic ~30W clean
Inputs
RCA, Bluetooth 5.0
RCA, Bluetooth 5.3
Features
Tone Controls with center detent (bypass), Pre-Out
Large Illuminated VU Meter, Tone Controls
Remote Control
✗
✗
Tube Stage
✗
✗
Price (estimated)
Price
~$76
~$62
Difference
~$14.00 cheaper (Fosi Audio MC101)
Things to Know
Fosi Audio BT20A Pro
- ⚠Bluetooth is always active; anyone can pair with it if you don't disconnect.
- ⚠Tone controls can introduce slight phase shift even at center detent.
- ⚠Pre-out level is low compared to industry standards.
Fosi Audio MC101
- ⚠Uses the older, noisier TPA3116 chip (higher noise floor than V3/A07).
- ⚠Bluetooth only supports SBC/AAC (no AptX/LDAC).
- ⚠Speaker terminals are very close together; difficult to use with thick cables.
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