No better amp beside my mac

Corrijo me calificacion, el amplificador de es de excelente calidad,
la cadena de sonido fue Amplificador Fosi MC351 -- Bocinas de torre Polk Es55, Bluetooth -- Spotify (Via Celular Ipod, mi celular samsung no funciono bien con los 2 canales en el Lef sonaba muy bajito pero era un tema del celular) ya lo cambie y suena bien, excelente amplificador! y de favor si peuden borrar mi calificacion anterior ya que era una falla del celular y no del amplificador.

Soy nuevo en esto del audio, compre mis bocinas Polk ES55 y compre es amplificador, las bocinas suenan regular una bocina, la del lado izquierdo no suena casi nada, la del lado derecho suena bien pero no me suenan con sonidos brillantes, nitidos ni equilibrados como en la sala de audio en que las escuche, no se si la potencia del amplificador es poca a la que necesitan los altavoces de torre, o igual que aflojen en unos meses las bocinas o bien no se usar el equipo amplificado Fosi! pero me parece buen amplificado ya pondre otras bocinas perod e estanteria technics que estaban arrumbadas. ya hi les dire como suena el amplificador y esas bocinas

I am using this product since last few days with so many input options like, bluetooth, Co axial, USB and RCA. I have not tried Optical input yet. Today I used USB with MAC and Apple Hi resolution lossless music using MIDI. Also with 48 V power supply. Sound quality is excellent. But there is some heating issues in Amplifier. I think its design should be improved like ZA3.

Today, I received this amplifier directly from Fosi Audio after 12 days of eagerly waiting for it. I am using it right now and posting my feedback as well. The sound quality is good. Presently, I am listening to sound on my two old bookshelf speakers from SONY. I have not attached a subwoofer yet, but the sound quality is still excellent. The Bluetooth functionality is working fine.

Fosi Audio products are good for specific uses at a low cost. The build quality is robust, and I think it will be a reliable companion for a long time. I am already having ZA3 balanced amplifier by Fosi Audio. I have purchased it to listen Audio CDs by connecting it with coaxial cable from output of Sony Blue ray Player. Also my old Passive Subwoofer of 180 watt can be connected. This will be complete 2.1 setup for stereo listening. I found this product very useful when you do not want a big setup and still want to listen quality sound. I wish Fosi Audio would also come up with other products like a CD player and a turntable. . Best wishes to Fosi Audio and thanks for making such good products.

The device is exactly what you see online and fits the description. I will add that the design looks very nice on my bookshelf.

Good but I feel like it was a bit expensive for what it provides.

It's a little under powered compared to its published rating, but overall I'm reasonably pleased.

Sleek looking device. Bluetooth works well. Have yet to experiment with the DAC but looking forward to it.

Everything is good just have big problem , this amp don’t have a remote control for volume

After lots of back and forth and not getting a replacement unit, the Fosi support sent me a file to patch my MC351 that was supposed to fix the imbalance issues I experienced with the amp and my software (MacOS). I had to get a windows machine first because their patching software is Windows-only.
Anyway, the firmware patch fixed the imbalance issues afaik (so far) but the VU meter is still not working and the sound is sharper now, which is a bit weird.

Overall a very powerful speaker amp (48V option) in a tiny package with a bit of a questionable service. I’m hoping they can fix all factory units for future reference and that the amp actually lasts as long as it should.

For now it’s a 50/50 recommendation

Night and day difference with my older less powerful amp I replaced. Sonic quality is simply amazingly better

The Fosi MC351 is a great little amplifier. It looks awesome and it has plenty of power for normal listening. The overall build quality is impressive

Build quality - Excellent
Look and Feel - Excellent
Power to Drive speakers ( in my case KEF Q150) --> The volume button is turned up to almost 80% then you kinda get some punch out of the speakers. Basically it lacks clean power to push these bookshelve speakers of mine. Thats my observation.

Great

A beastly machine in a spectacularly compact size.

Good sound, just missing a crossover filter on the speaker output. But otherwise, no concerns.

The volume is really low and the UV meter hardly moves.
I have only tried it with the Bluetooth and i only plan to use the bluetooth I made sure the volume on the Bluetooth device was all the way up

Excellent piece of equipment with great performance.

Didn’t receive my item untill now i will give it zero star

Wow, this is a nice little unit. I've seen a lot of praises for the ZA3 and this unit with the Bluetooth was a pleasant surprise. Great sound quality and a nice touch with the meter. You have to rock it a bit to get it to move, but that's OK. Very cool and versatile.

As expected

The amp is a great little workhorse
Wonderful build and great sound
I did have to burn in a bit, at first I thought it dud not have the power I needed, but it soon started to sound better and better.
It also arrived much sooner than I had expected

Thank you guys, all of you team, you made really interesting and good things!!

Solid sound that provides hours of entertainment. Does exactly what it says on the box… well.

Fosi Audio MC351 2.1 Channel Integrated Amplifier with DAC, VU Meter and Bluetooth

After almost one month use I am noticing some noise from speakers while switching off the amp. I think vol knob needs replacement. Its design may require improvement.