Aiyima A70vsFosi Audio V3 Mono
A detailed side-by-side comparison of the Aiyima A70 and Fosi Audio V3 Mono — two popular amplifiers in the Chinese HiFi space.
Specifications
Spec
Aiyima A70
Fosi Audio V3 Mono
Class
D
D
Chipset
TI TPA3255 (with PFFB)
TI TPA3255 (with PFFB)
Topology
Stereo / Mono Bridgeable
Monoblock
Power
2 × 300W (4Ω) / 1 × 480W (Mono)
240W @ 4Ω (48V/5A supply)
Inputs
RCA, XLR
RCA, XLR / ¼” TRS
Features
Subwoofer Output (Low-Pass Filtered), GaN Power Supply
Auto-Standby, 12V Trigger, Gain Switch (25dB/31dB)
THD / SINAD
—
-120 dB (SINAD via XLR)
Remote Control
✗
✗
Tube Stage
✗
✗
Price (estimated)
Price
~$128
~$131
Difference
~$3.00 cheaper (Aiyima A70)
Things to Know
Aiyima A70
- ⚠Volume taper is extremely aggressive; it gets very loud very early on the dial.
- ⚠The subwoofer output is active but does not high-pass the main speakers.
- ⚠Heat dissipation is passive and the case can become uncomfortable to touch during extended high-output sessions.
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.
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