Aiyima T9 ProvsFosi Audio TB10D (Upgraded)
A detailed side-by-side comparison of the Aiyima T9 Pro and Fosi Audio TB10D (Upgraded) — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Aiyima T9 Pro
Fosi Audio TB10D (Upgraded)
Class
D (Hybrid)
D
Chipset
TPA3250 + Jan5725 Tubes
TI TPA3255
Power
2 × 100W @ 4Ω
2 × 300W (Max) / ~100W Clean @ 4Ω
Inputs
Optical, Coax, USB, RCA, Bluetooth
RCA
Features
VU Meter (Active), Tone Controls, Remote
Bass and Treble Tone Controls
Remote Control
✓
✗
Tube Stage
✓
✗
Price (estimated)
Price
~$118
~$70
Difference
~$48.00 cheaper (Fosi Audio TB10D (Upgraded))
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 TB10D (Upgraded)
- ⚠Volume control is logarithmic but very sensitive; gets loud at the 9 o'clock position.
- ⚠Tone controls lack a center detent, making it hard to know when you are truly 'flat'.
- ⚠DC input spark is common when plugging in the power supply (connect to amp first, then wall).
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