Fosi Audio V1.0B 2 Channel Amplifier Stereo Audio Amp Mini Hi-Fi Class D Integrated TPA3116 Amp for Home Speakers 50W x 2 with 19V 4.74A Power Supply

Small size, good looks, simple functionality, and excellent sound - a great combination. The amp looks and feels solid, no issues with the build quality and craftsmanship. The inputs look nice and the potentiometer feels sturdy. I installed the amplifier for a short test with the following setup: 19 V PSU, 2x 50 W 4 ohm bookshelf speakers, RCA in from a laptop. It sounded good - audio is clear with no noticeable distortion or noise. It was able to get very loud. Currently, the mids are strong and accurate. The highs are solid and clear. Lows/bass could be a little stronger and more rounded, comparable to my old low end Pioneer Hifi amplifier. I got a reasonable volume with this setup, it was the good time to replace the old setup with a new one. The amp didn't get warm to the touch during the 30 minute listening session. I'm pretty impressed with this little amp - great price for such a class d amplifier and I recommend it. Let's hope it will stay functional for a long time.

I’ve been using this little amp for about 2 years now and it’s fantastic. Great sound for the money, especially when setup properly. It was on my desk with monitors at ear level and the sound was phenomenal. Now they power the bookshelf speakers with audio from my turntable and it easily fills the house with plenty of range left on the knob. I’ll likely be getting another Fosi amp to replace this one so I can put this one at my desk. Highly recommend.

First off let me say that I have also purchased a Fosi Class AB amplifier and I like very much. Having seen a youtube video showing the difference in the sine waves between a class AB amp and a class D amp, I understood why there is inherently more distortion with class D amps. That being said, I don't know what the electrical engineers did at Fosi but the sound produced for the price paid is nothing short of amazing! The first thing I did was hook it up to a 24 volt 5.7 amp power supply from my SMSL AD18. As compared to the shipped power supply, which is not bad, the sound really seemed to open up. The bass seems more pronounced but very taut and the trebles on the other end really opened up. Where to start... the soundstage produced by this tiny little amplifier is awesome. When hooked up to my bedroom speakers, if I lay in bed and close my eyes its very hard to tell where the speakers actually are. The details and clarity are wonderful, I heard things in some songs that I never noticed before. Also equally impressive is the channel separation. I'm not sure if its because I am used to streaming through units with their own built in bluetooth so I am asking an amp to perform two function and do them both well. The current setup is a BluDento connected by RCA cables. This unit is supposed to produce quality sound when connected by a coaxial cable or toslink optical cable but the best sound is supposed supposed to be produced when connected by the stereo analog outputs. All I can say is that there appears to be no crosstalk between channels and the sound produced is engaging and immersive. Its solid and clean from top to bottom. This is just my 2 cents and your mileage may vary but from where I stand, this is one solid little audio amplifier. No bells no whistles it just does one thing and I think it does it very well.

This is a good little amp for the money. Works fine, the supplied power supply is only rated for 89 watt output so I figure its only putting out 40 watts per channel not 50. However However all the other amps at this price have about the same power supply. It has plenty of gain, I got full power out driven by my mini PC, TV, Tecsun radio, pixel 6a phone through the usb c to rca adapter and an old Samsung tablet. There was no hiss listening right at the speaker with the gain full. I looks fine and seems to be built well. The speaker connectors are ok a little small but perfectly usable. This amp is very small with an aluminum body. I would recommend it to a friend looking for a small cheap amp.

OK, lived with it for a couple of weeks now, and am really very impressed. My background is a former budget audiophile who has been unable to set up a decent system for six years now- and decided to see what ChiFi is all about. Last system was vintage Amber Series 70 amp/Parasound preamp/NAD cd/Magnepan MMG and I'm comparing this to my memory of that. I've paired this Fosi AudioTPA3116 based integrated amp with Q Audio 3010 speakers and a Chromecast Audio. The Q Audios are small enough so that I'm unable to judge lower region bass availability, and the ChromeCast Audio means that I'm still dealing with Spotify compression, but with those caveats here we go... Very surprised at the available power and the control this had over the (small) speaker cones. Chose it because this board design appears to have more capacitors then others on Amazon, but I was used to having big cans in the Amber and was skeptical on it's high-current demand performance. At least with the small speakers I need not have worried, this sounds easy and effortless within it's smaller wattage environment. Don't sense the amp straining or playing catch-up with varied types of music. They say these things have around 90% efficiency, and it shocks me that there's this much push available from this tiny unit. If you're banging big speakers at high volume you may feel differently, but for normal/louder listening levels in a 300 sq ft room this just pours it out. Transparency and presence are very good, with believable voices and instruments that have impact and some resonance. Sound staging and imaging are also good with easily located musicians in a reasonably wide area- that area is a bit shallow though, without great depth, and the musicians sound slightly distant instead of right there in your room. The important caveat here is the Chromecast Audio limitations. I believe that these areas are particularly affected by streaming through Spotify rather than a direct connection from a disc player or lossless audio feed and my issues may well have to do with the source. The tonal quality does seem dry to me. Not harsh in any way, but vocals and stringed instruments particularly don't have the warmth that I prefer (very dry at first listen with typical improvement over time.) That being said, there's lots of detail here, and you can even hear a bit of breathing/fingering/striking. It's a more analytical approach, and really the amount of information available is extremely impressive for this price. I think this reflects the quality of the preamp that's in there, and that kinda leads to the idea that there's a very short signal path in this thing. With a really small board, no tone controls and only one input, seems to me that even though the chip is playing around with DSP in some way that I don't understand, there's a lot of 'straight wire with gain' positives here. This does not sound like an expensive high-bias AB amp with a 10 pound heat sink. Don't expect that, but this is a much better than anticipated integrated amp that is of high enough quality to allow for enjoyable critical listening and is great value! It sounds considerablly better than a typical 1980s/1990s mass market receiver, and at this price it's a ridiculous bargain. Back in the Dino days, you would pay much, much more money to get this kind of sound quality. A great entry into higher-end sonics.

Compré este amplificador en 2020 y llevo ya 6 años consecutivos usándolo como mi equipo principal. El conector de la fuente incluida no se inserta del todo, dejando al descubierto parte de ella. Alimentando el amplificador con la fuente de poder que viene incluida tengo potencia más que suficiente para dos bocinas de tres vías con woofer de 220mm a 6ohm. No hay ruido de estática cuando no estás reproduciendo ni ruido de pop cuando lo enciendes. El único problema es que la perilla de volumen no está marcada con algo que te permita saber a qué volumen reproduces, mete ruido cuando la mueves y que a volumenes altos –con la perilla pasando las 12 o la 1– puede meter distorsiones. También hay que decir que el amplificador no se calienta a pesar de que lo he llegado a usar al 70% de volumen durante 6 horas consecutivas. Por el sonido no puedo decir mucho, salvo que la imagen estéreo que da es buenísima: amplia, precisa y llena de detalle.

El equipo es de buena calidad. Tiene un sonido limpio, la música se escucha genial y sin ningún ruido de fondo, con un completo silencio en vacío. En mi caso, con altavoces de 6 ohmios, tiene potencia de sobra para un salón de 20 m2, para mí es suficiente no pasar el potenciómetro mas o menos del primer cuarto de su recorrido. La verdad, me ha sorprendido, los amplificadores tipo D tienen mala prensa entre algunos audiófilos, pero a mí, me ha parecido que tiene un sonido muy agradable. Muy buena relación calidad precio, por poner una pega, no parece tener protección antipop y si lo dejas encendido y lo activas directamente desde el interruptor de una regleta, por ejemplo, puedes escuchar ese temido pop que podría llegar a dañar tus altavoces.

Bought for connecting a DAC (Focusrite 2i2) to studio motor speakers. The unit is delivered including a power brick with the correct EU plug without me needing to specify when bought. Solidly packaged. Metal housing, feels like a solid and heavy build. The volume knob has a satisfying resistance when turned. Sound quality is as expected, enough juice to drive my 8 ohm speakers without interference or lack of power. To me the sound feels neutral and balanced without extremes either in bass or high frequencies.

C'est le deuxième ampli Chinois classe D que j'achète, ayant été conquis par un modèle d'une catégorie supérieure bien que ce petit Fosi Audio ne démérite pas non plus. On peut se demander à juste titre si ces nouveaux amplis Chinois ne rendent pas obsolète les amplis HIFI de classe AB traditionnels d'entrée de gamme car ce Fosi Audio offre un son excellent qui surprend vu la taille de l'appareil avec son transformateur de 19V. La course du volume est régulière, progressive et équilibrée et on restera en-deçà de 10h la plupart du temps même avec des enceintes de rendement faible. Scène sonore, pureté des timbres, clarté et dynamisme, à l'écoute ce mini-ampli ne cesse de nous surprendre par ses réelles qualités acoustiques. La finition est parfaite, pas de bruit parasite, pas de souffle, pas de ploc à l'allumage, ne chauffe pas et ce qui est le plus incroyable, sa consommation électrique ! Si on reste en-deçà de 12h, avec des enceintes de bon rendement, on aura déjà pas mal de puissance pour une consommation électrique qui va osciller entre 1.4w et 2.8w ! A plein volume on arrive péniblement à 3.5w ! En écoute normale on sera donc à 1.4w (volume à 9h), autant dire que c'est un avantage non négligeable, voire devenu très recherché ! Avec le volume à fond, on entend aucune distorsion ce qui est surprenant, cela dit sa puissance reste limitée mais à mon sens suffisante si on le branche sur des enceintes ayant un bon rendement. Par contre, il faudra privilégier des fiches bananes si on veut utiliser du câble de 2.5mm, les borniers n'acceptent du câble que jusqu'à 1.5mm apparemment (ce qui n'est pas un problème). Le boîtier étant léger, il a aussi tendance à basculer si on utilise des raccordements arrières trop qualitatifs (lourds). A mon sens ces nouveaux petits amplis Chinois en classe D rendent désuets les amplis HIFI classiques des grandes marques d'entrée de gamme (pour le moins) sauf si on recherche plusieurs entrées, des réglages de tonalité, une balance et une télécommande. Chacun pourra trouver une utilisation à ce petit Fosi, mais pour moi c'est l'ampli idéal à portée de main à côté d'un ordinateur et branché en sortie d'un DAC. Il pourra être utile aussi dans une seconde pièce mais l'absence de télécommande le rend moins intéressant pour regarder les films qui demandent souvent de corriger le volume pendant le visionnage. Je ne vois aucun défaut à ce petit ampli, le prix est attractif et son look minimaliste trouvera facilement sa place sur tout bureau ou étagère. Fortement recommandé. En espérant que mon commentaire vous sera utile.

Vrai ampli de puissance sans souffle qui va plus fort que sa taille le laisse supposer. Boitier solide. Attention pas de réglages basses aigus. Tu peux acheter les yeux fermés