Fosi Audio V3 MonovsWillsenton R8
A detailed side-by-side comparison of the Fosi Audio V3 Mono and Willsenton R8 — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Fosi Audio V3 Mono
Willsenton R8
Class
D
AB
Chipset
TI TPA3255 (with PFFB)
—
Topology
Monoblock
Push-Pull
Power
240W @ 4Ω (48V/5A supply)
45W (Ultralinear) / 25W (Triode)
THD / SINAD
-120 dB (SINAD via XLR)
—
Inputs
RCA, XLR / ¼” TRS
—
Features
Auto-Standby, 12V Trigger, Gain Switch (25dB/31dB)
Remote Control, Bias Meter, Triode/UL Switch
Tubes
—
KT88 x4 (or EL34), 6SN7 x2, 6SL7 x2
Weight
—
29 kg
Remote Control
✗
✓
Tube Stage
✗
✓
Price (estimated)
Price
~$131
~$1449
Difference
~$1318.00 cheaper (Fosi Audio V3 Mono)
Things to Know
Fosi Audio V3 Mono
- ⚠Chassis gets significantly warm due to the compact thermal design coupled with high power density.
- ⚠Auto-standby feature produces a mechanical 'click' that some users find audible in quiet rooms.
- ⚠Requires two separate power bricks (or a specialized splitter) for a stereo pair, adding cable clutter.
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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