Fosi Audio TB10D (Upgraded)vsWillsenton R8
A detailed side-by-side comparison of the Fosi Audio TB10D (Upgraded) and Willsenton R8 — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Fosi Audio TB10D (Upgraded)
Willsenton R8
Class
D
AB
Chipset
TI TPA3255
—
Power
2 × 300W (Max) / ~100W Clean @ 4Ω
45W (Ultralinear) / 25W (Triode)
Inputs
RCA
—
Features
Bass and Treble Tone Controls
Remote Control, Bias Meter, Triode/UL Switch
Topology
—
Push-Pull
Tubes
—
KT88 x4 (or EL34), 6SN7 x2, 6SL7 x2
Weight
—
29 kg
Remote Control
✗
✓
Tube Stage
✗
✓
Price (estimated)
Price
~$70
~$1449
Difference
~$1379.00 cheaper (Fosi Audio TB10D (Upgraded))
Things to Know
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).
Willsenton R8
- ⚠Bias drift is common; owners need to check and adjust bias frequently during the first few months.
- ⚠Stock preamp tubes (6SN7/6SL7) are often noisy or microphonic; immediate replacement is recommended.
- ⚠Extreme weight makes shipping it back to China for warranty claims financially impossible.
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