Fosi Audio ZA3vsSMSL AO300
A detailed side-by-side comparison of the Fosi Audio ZA3 and SMSL AO300 — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Fosi Audio ZA3
SMSL AO300
Class
D
D
Chipset
TI TPA3255
Infineon MA5332MS
Topology
Balanced Stereo / Mono
—
Power
155W x 2 (4Ω)
2 × 165W @ 4Ω
Inputs
RCA, XLR
HDMI (ARC), USB, Optical, Coax, Bluetooth, Balanced XLR
Features
Subwoofer Out, Trigger Input (dependent on revision), Op-Amp Rolling
Subwoofer Out, Filters, EQ, Remote
Remote Control
✗
✓
Tube Stage
✗
✗
Price (estimated)
Price
~$132
~$195
Difference
~$63.00 cheaper (Fosi Audio ZA3)
Things to Know
Fosi Audio ZA3
- ⚠Frequency response is load-dependent (high frequencies may rise with 8Ω loads due to lack of PFFB).
- ⚠The subwoofer output is full-range pass-through on the main terminals; it does not filter bass from the main speakers.
- ⚠Volume control is defeated in Mono mode, requiring a preamp.
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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