Fosi Audio BT20A ProvsSMSL AO300
A detailed side-by-side comparison of the Fosi Audio BT20A Pro and SMSL AO300 — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Fosi Audio BT20A Pro
SMSL AO300
Class
D
D
Chipset
TI TPA3255
Infineon MA5332MS
Power
2 × 300W @ 4Ω
2 × 165W @ 4Ω
Inputs
RCA, Bluetooth 5.0
HDMI (ARC), USB, Optical, Coax, Bluetooth, Balanced XLR
Features
Tone Controls with center detent (bypass), Pre-Out
Subwoofer Out, Filters, EQ, Remote
Remote Control
✗
✓
Tube Stage
✗
✗
Price (estimated)
Price
~$76
~$195
Difference
~$119.00 cheaper (Fosi Audio BT20A Pro)
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.
SMSL AO300
- ⚠Menu system is small and can be finicky to navigate.
- ⚠HDMI ARC implementation is hit-or-miss with some TV brands (LG specifically).
- ⚠Bluetooth antenna range is shorter than average.
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