Review: Fosi Audio V3 Mono Amplifiers When Fosi Audio tapped me to review their V3 Mono Amplifiers, I was ready to put them through the wringer. The goal? See if these little powerhouses lived up to the hype—not just by their specs, but by real-world testing with 48V10A and 48V5A power supplies. I also wanted to see if Fosi had sent me pristine, cherry-picked units or if they were consistent with what’s on the market. Spoiler alert: they held up, and then some. First Impressions: Right out of the box, these amps feel solid—like they mean business. I received 2 monoblocks with the 48 Volt/10 Amp power supplies . I also (with my own funds) purchased 2 monoblocks from Amazon with the 48 Volt/5 Amp power supplies to compare quality and noticeable differences in the different power supplies. But as much as I was impressed with the build quality, I immediately noticed something annoying: the power port is uncomfortably close to the speaker terminals. While you won’t be pul...