Aiyima T9 ProvsFosi Audio ZA3
A detailed side-by-side comparison of the Aiyima T9 Pro and Fosi Audio ZA3 — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Aiyima T9 Pro
Fosi Audio ZA3
Class
D (Hybrid)
D
Chipset
TPA3250 + Jan5725 Tubes
TI TPA3255
Power
2 × 100W @ 4Ω
155W x 2 (4Ω)
Inputs
Optical, Coax, USB, RCA, Bluetooth
RCA, XLR
Features
VU Meter (Active), Tone Controls, Remote
Subwoofer Out, Trigger Input (dependent on revision), Op-Amp Rolling
Topology
—
Balanced Stereo / Mono
Remote Control
✓
✗
Tube Stage
✓
✗
Price (estimated)
Price
~$118
~$132
Difference
~$14.00 cheaper (Aiyima T9 Pro)
Things to Know
Aiyima T9 Pro
- ⚠VU meter sensitivity is not adjustable; barely moves at low volumes.
- ⚠The tube stage adds measurable distortion (2nd harmonic), which is intentional for 'flavor' but not high-fidelity.
- ⚠Runs quite warm due to the tubes and internal DAC.
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.
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