V3 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 Power

I am overwhelmed at the performance of these tiny PowerAmps. They drive my DALI Sonik5s at their optimal performance with full authority. Being two monoblocks, there's a zero Cross-talk: resulting in razor sharp imaging, pitch black background an ultra resolving sound with a soundstage wider than the physical speaker separation. V3 Mono pair is a really fuss-free option. It's 'Auto' mode supports well. It's Balanced XLR-In is a major advantage! Earlier I heard about the thinness, lack of body, dryness of the sound signature from a Class D amplifiers. But these FosiAudio V3 Mono pair sounds very much musical, organic and engaging overall. I have no complain: and I think it is one of my most wise decisions to go with V3 Mono pair. It may be noted that for last one decade I was without Class A/B amplifier from the house of Marantz. And, now I'm thoroughly enjoying the V3 Monos. At its price point, the V3 Mono is highly recommendable! Having both RCA and XLR Inputs, it's very much flexible at Connectivity. I have operated it continuously for about 2 hours at around 95% of Volume from WiiM Ultra, it becomes hot, but that's quite reasonable and remains in acceptable touch limits.

Performance is excellent

Pros : - Great stereo separation if you combine 2 of these monoblocks. - Okay sound quality. Neutral & flat. Suits well for nearfield bookshelfs under 5 feet. - Very compact & portable. - XLR balanced inputs. Cons : - Not for HiFi sound systems. Please stick to your traditional Class AB/A integrated amps. - Very low gain for slightly bigger rooms. - RCA inputs still output a bit of phase smearing noises above 67 volume. - Boxes heat up. Maybe build a bit bigger box for better heatsink capability. Class D tech improved a lot. But it still needs more refinements for better damping factor, better phase & gain control.

These are tiny but performance is like beasts. Clear and punchy sound paired with Polk ES20. Loving it

Excellent for pricing. I am still using these in my 8lakhs stereo system. Never felt like bottleneck. However, better amp will definitely outperform these. But these monoblocks do what they do. Cheap but not bad in anyway.

Very Good Amplifier, Very Good Sound, my professional 15 Inches speakers have a sensitivity of 99 db and they pickup every Sound, Humm or Hiss but these Amplifiers have no Humm or Hiss, Sound is excellent no Distortion at full Sound, unbeatable at this price.

Tiny footprint, well packaged and does the job well. Heat is noticeable but nothing to worry about

Superb V3 mono Pair in Stereo modes I also tried with 32V 5A supply and surprisingly the cabinet enclosure heating issue got subsided.. Try Thanks Fosi, looking forward for V4.. V5...V6... Like Samsung or iphone models

The four channels of the TPA3255 amp chip are all utilized in a parallel arrangement in this amp. This means the dampening factor on your speakers is x2. If you have a 6ohm speaker this amp sees it as a 12ohm load. Add to this great topology the feedback filter placed at the output stage (PFFB) and you’ve got two unique features above and beyond most class D amps in this price range or higher. It makes for a great sounding powerful amp that can drive just about anything. These can get hot so I immediately replaced the pitiful squirt of thermal compound with Thermal Grizzly Duronaut (which basically performs extremely high without drying out). I then removed the rubber feet from the bottom and strapped on a 150mm aluminum heatsink with a thermal pad between. I then use the amps upside down so the heat goes straight out the top heatsink. Normally it spreads through the bottom and around the enclosure creating a cute little oven for your components. Roll op amps to improve sound, use at least a 48V 5A power supply and Bob’s your uncle !

Incroyables ampli pour un tarif hallucinant. Équipé en 7.2.2 dans une salle dédiée hifi et home cinéma, j'ai acheté 3 amplis pour alimenter mes 3 avants Dali Rubicon. Je redécouvre la musique et les films. Plus d'impacts, plus de précision, plus de clarté, plus d'immersion. Plus, plus, plus. Ça a un impact sur l'ensemble du système. J'avais acheté l'an passé un ampli de puissance à 1400€ et 3 canaux déçu de l'amélioration. Avec ces amplis c'est le jour et la nuit Ils chauffent un peu mais sans plus dans un meuble ouvert. Je n'en reviens toujours pas du gain qualitatif. Je conseille à tous mes amis d'investir au moins pour la stéréo. Un seul inconvénient trop de fils à rajouter ( 6 rca, 3 cordons d'alimentation). Ce n' est pas négligeable mais pas rédhibitoire. Merci Fosi.

This thing rocks. Hear the finest audiophile quality.

Fosi Audio V3 Mono. A couple weeks ago i recieved 2 V3 mono amplifiers i'm very pleased with them! They sound incredible with my aune S9 c pro dac with trs out from V3 mono in to my S9C dac with xlr female.Incredible value higly recommended!

I had read some reviews, as I am interested in this market a lot, already owning a Fosi V3 and a pair of Aiyima A07 Max's... I had very high hopes for the Fosi V3 mono amps, and was not disappointed! Fresh out of the box they were a little tight and congested sounding, just a bit-no blooming of the sound... Well, 5 hours later and wow!! What a difference! The sound-stage is deep, wide and very clear, with no shortage of power, that's for sure! They sound so good they have already replaced my other monoblock amps! Bass is deep and very tight, the midrange is clear and open, highs are not shouty but again clean and well balanced top end. Excellent input choices (RCA and XLR) and simple controls... Having heard several of these TI 3255 chip amps, all have a similar sound, but the additional realism of the V3 mono is quite audible! And you can swap audio op-amps as well! A killer deal on the amps right now! Buy a pair- you won't regret it! :) Edit: I've been listening to these V3 mono amps for about a week now, and I am BLOWN away by the amount of sound these amps reproduce! True giant killers! I'm more than pleased with these amps! Buy some! :)