Fosi AudioV3 Mono Power Amplifier for Home Audio Speakers, Mini Monoblock Class D Amp with TPA3255, 240W for HiFi Home Theater AVR Receiver Component, RCA/XLR Balanced Inputs 48V/5A PowerClimatePartner certified

great class d amp for the money. Able to power magnepan .7 without issues. quiet, accurate. This is a monoblock amp, if you run L+R you need two. only has XLR or RCA inputs, no volume control, so you need a preamp that can control volume to line out. Can get a bit warm to the touch (40 oC)

I first encountered the Fosi monoblock V3 for use in a music-only system and was blown away by its transparent sound and high power for such a tiny box at such a low price. I began to think about deploying more of them as a possible upgrade for an older (but top of the line) Onkyo Dolby Atmos AVR in a 5.1.2 Atmos layout, using the Onkyo's preamp outputs rather than the internal amps.So far I have installed 3 of them, powering the from L & R and the Center Channel. As I expected. everything sounds better. The sound is more detailed and accurate, imaging is more precise, dialog emerges more clearly from other soundtrack elements. I look forward to soon adding more V3's to complete the surround channels and the height speakers, but the listening experience is already so impressively improved.The way these amps power on and off based on detection of signal has functioned perfectly with no delays, popping sounds or any other negative aspect. They just work. I was always pleased and proud of the high fidelity of my AVR, but this has been an extremely high value upgrade that has put it into a whole other category. HIGHLY recommended!

Got two these working as L, R, with a denon avr, feeding a pair of kef r3 and they are amazing, really clean and effortless sound, they get a little on the warmer side but my x3800h is even hotter to the touch than the v3 mono, the standby wake up option works every time. 10/10

The V3 mono is a steal at this price. So much power in such a little package. I bought two for my desktop setup. I run them balanced from a SMSL Raw MDA1 and into Klipsch RP600m. They sound amazing. I don't think it can get any better at this price. My only complaint is that they get way too hot. Sometimes too hot to touch. I added a heat sink to both of them, which helps.

I wasn't expecting this much from a device like this. I have two 12 infinity subwoofers that are dual voice coiled. My thought was to give these a try in the off chance they can actually push the sub. I tried both 8 and 2 ohm configurations on one subwoofer and I am really impressed. 8 ohm, the subs were happy, I would guess they were getting around 130-140 watts as expected. The damping is impressive with 8 ohms as everything sounded amazing and tight with true accuracy of the sounds it was able to produce. When I tried 2 Ohms, that is when I laughed out loud due to my shock on how much current this thing can produce! I'm not going to say it was crazy but it was truly getting there. I'm not sure if this can double the power at 2 ohms but it did seem to be producing more then 300 Watts RMS with ease. I have a 400 Watt RMS amp and this thing is right up there with it.My plan now is to get 4 of these and pin each amp to a voice coil to provide 480 Watts RMS (240W per voice coil) to each subwoofer. While it performed well at 2 Ohm I feel a 4 Ohm load might be a slight bit better on damping.For the price these things are absolutely amazing, I am now figuring out if I need to run a dedicated 20AMP service for my audio equipment cause these alone will draw 14 Amps when they hit. I'm pretty sure I will trip the circuit breaker on a 15AMP with the rest of my gear if I don't upgrade it.

1 out of 3 was defective , it powers on but no sound.The remaining two work great, they do seem a bit too hot. As long as it doesn’t break in next some years, nor interfere with the sound heat doesn’t bother me.One thing to note there is much louder sound when I use RCA input vs XLR I had to add +9 db on my receiver for same volume.Also there is a some noise when using RCA to RCA, XLR has almost no noise. My receiver unfortunately doesn’t have XLR output, I just use RCA to XLR cable. Works great, no interference noise, only downside is I have to +9db on a receiver.I hear lots of people adding Sparkos OP amps. Is it worth it I wonder?

These little amp pack a punch for their size. I needed an amp in my living room theater setup and decided to go Mono Blocks (just because). I have them connected to a Gustard R26 dac and they’re driving a set of Klipsch Heresy II’s. For giggle I brought them into my listening room to give them a listen. I connected them to my Parasound P6 preamp via XLR and wires them to my Dynaudio Evoke 50 floor standers - wow. They were clean and spot on, and like I said, pack a hell of a punch for their size.I have since lent them to a friend who had a channel in his power amp go out. He’s Driving Magnepans with them, and now seems IN NO RUSH to replace his power amp. Go figure! 😂I’d definitely recommend them.

Pedirle mas sería totalmente injusto por este precio, es muy transparente, la zona alta la reproduce muy, pero muy bien... y la zona de graves es seca, da golpes secos y claros... totalmente satisfecho con el rendimiento.!Pero hay un detalle que acabo de confirmar, la polaridad esta invertida, al usarlo con el denon 4800H y calibrarlo me envio el mensaje de polaridad invertida, intercambie los cables y se soluciono... pero esto no esta bien, y ya compre 2 y los dos estan invertidos, tengo un tercero en camino y nose si vendra invertido tambien. Fosi por favor enviame con la polaridad correcta, no invertida! Necesito cambiar los dos que ya llegaron con esa falla de polaridad..!Y llego el tercer Fosi...y que creen? Sí, tambien llego con la polaridad invertida y con otro color...que ahora es negro intenso, los anteriores eran negros tambien pero tirando hacia el grisaceo.