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Fosi Audio V3 Mono Review by Audio Science Review
Discover Audio Science Review's test of the Fosi Audio V3 Mono Class D power amplifier. This compact, powerful device is based on a TI TPA3255 amplifier chip, enabling it to develop up to 240W of power under a 4-ohm load. In addition, two TI NE5532 OPAs, DIP8-mounted and therefore easily replaceable, bring a beautiful coloration to the output signal. In addition, PFFB technology considerably reduces the level of distortion and noise at the amplifier's output. In terms of connectors, the Fosi Audio Mono V3 features an RCA input with adjustable gain, a balanced XLR/Jack 6.35mm combo input and a speaker terminal output. A 48V/5A power supply is supplied with the amplifier for maximum performance. A 48V 10A power supply available as an accessory also enables two Fosi Audio V3 Mono amplifiers to be powered simultaneously for a 2.0 configuration, thanks to a DC jack power doubler.
Complete Fosi Audio V3 Mono test by Audio Science Review (Amir)
Key points from Audio Science Review's test of the Fosi Audio V3 Mono
Fosi Audio V3 Mono measurement dashboard
In terms of noise and distortion (SINAD), the Fosi Audio V3 Mono presents excellent measurements with a score of 100dB via its XLR input. Use of the RCA input reduces performance somewhat, but there's nothing notifiable that would disadvantage its use. Distortion, for example, remains inaudible at -115dB.
Fosi Audio V3 Mono SNR
The V3 Mono offers excellent results in terms of noise.
Fosi Audio V3 Mono load dependency test
The V3 Mono has no load dependence in the audible band. Only a 0.5dB peak at 20kHz, of no real consequence.
Fosi Audio V3 Mono distortion ratio
The rate of distortion is very low, increasing only in the high frequencies.
Fosi Audio V3 Mono output power
The measured power of the V3 Mono is in line with the power announced by Fosi Audio: 240W @ 4 ohm at 1% THD+N. And up to 100W of power for an 8 ohm load (THD+1=1%), which is still enough to power many speakers.
Conclusion of the Fosi Audio V3 Mono test by Audio Science Review (Amir)
"All I can say is wow! It is incredible how far these small amplifiers have come. It is the result of a manufacturer listening to our needs, implementing features such as balanced and trigger inputs, and proper feedback mechanism to essentially eliminate load dependency. I can't imagine asking for more from Fosi when it comes to such an amplifier. Everything is as good as you could possibly want. It is my pleasure to recommend Fosi Audio V3 Mono amplifier."
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