Fosi Audio V3 MonovsTopping PA7 Plus
A detailed side-by-side comparison of the Fosi Audio V3 Mono and Topping PA7 Plus — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Fosi Audio V3 Mono
Topping PA7 Plus
Class
D
D
Chipset
TI TPA3255 (with PFFB)
Proprietary / Modified Class D
Topology
Monoblock
—
Power
240W @ 4Ω (48V/5A supply)
2 × 245W @ 4Ω (1% THD) / 2 × 300W @ 4Ω (10% THD)
THD / SINAD
-120 dB (SINAD via XLR)
—
Inputs
RCA, XLR / ¼” TRS
XLR/TRS (Balanced), RCA
Features
Auto-Standby, 12V Trigger, Gain Switch (25dB/31dB)
Volume Bypass (Pure Power Amp Mode), 12V Trigger
Sinad
—
102 dB (excellent for Class D)
Remote Control
✗
✗
Tube Stage
✗
✗
Price (estimated)
Price
~$131
~$549
Difference
~$418.00 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.
Topping PA7 Plus
- ⚠External power brick is massive and can be difficult to hide.
- ⚠Runs warmer than typical Class D amps due to high power density.
- ⚠No remote control (intended to be used with a preamp like the E70).
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