Fosi Audio BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker
Original price was: €90.€80Current price is: €80.
Price: $89.99 - $79.99
(as of Jul 26, 2025 03:45:32 UTC – Details)
From the brand
Amplifying Your Voice, Shaping Our Innovation
Guided by our mission of “Redefining HiFi with Unmatched Value”, Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide.
Bluetooth 5.0 Stereo Amplifier
2.0 Channels Home Audio Amp
Subwoofer Amplifier & Mono Amp
Fosi Audio V3
TPA3255 Class D Home Audio Mini Speaker 2 Channel Amp 300 Watts x2
ENTRY-LEVEL POWER AMPLIFIER: Experience powerful sound with the BT20A Bluetooth amplifier, boasting an impressive 100Wx2 maximum output power. It can power multiple speaker cabinets, which can be used at home or in small venues
EFFECTIVE, SIMPLE, AND NO FRILLS: The compact design allows it to be used in any space where passive speakers are required. It can be used in an office, a bedroom, a living room, a garage, or even on the patio
EASY TO SET UP: The 2 Channel amplifier has a straightforward installation and a one-touch power switch for easy operation. The smooth bass and treble controls allow tuning to taste and the connected bookshelf speakers
BLUETOOTH AND RCA INPUTS: The seamless Bluetooth connectivity allowing you to stream music directly from your phone without any dropouts or delays, delivering crystal-clear sound and impressive volume for your home audio setup
ALL-BLACK DESIGN: This Class D amplifier features an integrated one-piece design that not only adds to its looks but also makes it more durable. With its stylish look, it fits wonderful on any shelf and complements most home decor
Customers say
Customers find the amplifier delivers excellent sound quality and reliable Bluetooth connectivity, with one mentioning it connects up to 20 feet away even with doors closed. The device powers high-wattage speakers effectively and is well-built, with a compact design that tucks away anywhere. They appreciate its ease of setup, particularly the Bluetooth pairing process, and consider it great value for money, with one noting it’s worth the cost for its sound quality.
11 reviews for Fosi Audio BT20A Bluetooth Stereo Amplifier, 2 Channel Home Audio Component Amplifiers for Passive Speakers, Mini Class D Amp Receiver 200W for Indoor/Outdoor/Garage/Ceiling/Bookshelf Speaker
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Original price was: €90.€80Current price is: €80.
DesertScottAZ –
Solid little unit.
I got this to run some higher end home audio speakers installed outside for the yard/pool area at our house. The speakers are $300 each and I had been running it on an older Sony coil-based home theater amp because I thought I needed the zones and independent volume controls/management for tone/eq. The amp in the cabinet indoors was putting out quite a bit of heat when it was powered on whether they were in use or not. The wiring was a total mess and I bluntly didn’t enjoy dealing with it. I went in to this project assuming I was going to get a Denon, Onkyo, Yamaha, or some home audio mixer board + eq, or something fancy with roughly $2k budget… I was on struggle street trying to piece it all together. I only need a simple input amp. I have a cheap class T amp in my garage that works for what I am doing there, but the audio quality is trash. I rolled the dice and picked up a few of these and man, they blew my mind. They have a lot of punch/power and the audio quality is REALLY surprising compared to the old stuff I had. The BT connection is ROCK SOLID. A lot of these cheap china BT interfaces are trash and buggy. This thing pairs right up and is solid and reliable. I’m waiting on the splitters to feed the source to all of them, but per zone, they’re superb. Super straightforward install and good labeling, pair with FosiXXX and go for BT. It’s a small, light package and the box it comes in is pretty good for it’s weight and has some heft. Not sure whether the weight is from the case or components, but it’s a mosfet so we’ll see about heat dissipation down the road and whether it does a thermal cutoff or not. I might end up getting more for the garage after a few sessions in the backyard. I was pleasantly surprised!
shadax –
Small but mighty
As an person whoâs used to high-end tube amps and large receivers, I wasnât expecting much from such a small, affordable amp.No, itâs not going to replace your multi thousand $$$ boutique amp for critical audiophile listening or bragging rights, but for 99% of the population or normal TV, movie, game and music listening itâs awesome.I loved it so much that I ended up buying a second one.This little powerhouse easily drives my JBLs and KEF LS50 speakers to impressive volume levels with crystal-clear clarity. Itâs perfect for my living room TV setup.The Bluetooth feature works flawlessly. I also appreciate that it comes with a remote. For the price, this amp is a steal. If youâre looking for a compact, budget-friendly amp that still delivers excellent performance, I highly recommend it!
Raju Tamot –
Great Amp
Great Amp. So much power is packed in this small, but yet, very simple device. Sound is crystal clear and the Bluetooth makes life much more easier. Great product!
tazhatewater –
great little amp. does the job nicely
i got this to replace the final stage on the sony amp that blew it’s left side. the sony still works as a preamp and switcher for the turntable, tv and music streamer i have so i didn’t have to redo a lot of wiring. all i had to do was run a line from the tape-out on the amp and move the speaker wires to this little guy. all my controls and remotes stayed the same. nice bonus is i now also have bluetooth. it’s not as powerful as my original amp and you can’t drive it as hard; ive a feeling if you do, something will blow as the components are rather small. it happened on another, similarly built amp. the sound quality is adequate, esp in this age of earbuds. my wife doesn’t notice but i can definately tell there is a midrange bias, even with the tone controls. still, it’s good for it’s size.one thing i really like is the bluetooth addition. the sound quality is good and there is very little spurious noise. it is a preferential connection so it will override anything coming in from the AUX inputs. i wish there was a button to switch but as is, just turning off the bluetooth on your phone will cause it to automatically switch back.overall, it’s a good little unit. i wish it were closer to a $60 price point but build quality seems good and sound quality overall is great for this little guy. i’ll probably buy another one to use as a portable outdoor entertainment like another reviewer did.
RYAN C NEWCOMB –
Cool little thing
Super tiny, Super simple, intuitive hookup and operation. delivered same day. Sound is Pretty good on its own, or would probably make a decent pre-amp.
Peter D Copeland –
The amp I didn’t know I needed
For the price, this is a fantastic little amp. Small form factor, simple controls, and surprisingly crisp output. I was using a large Sony receiver for my desk previously, but since I only use output from my computer to those speakers, I had wanted to get something smaller/simpler. This fits the bill perfectly. I’ve tried small-format amps previously, but got muddy and muted output. This one is definitely better in every way compared to those cheap ones. Powers my Klipsch bookshelf speakers with ease, voices are clean and crisp, bass response is definitely there.
Artur M –
Mój amplituner Onkyo zajmowaÅ miejsce w moim minimalistycznie urzÄ dzonym salonie , dodatkowo nie posiada bluetooth , wiÄc zakupiÅem Fosi Audio , i…. Nie jestem melomanem i pewnie dla tego 🙂 nie sÅyszÄ różnicy miÄdzy tymi wzmacniaczami , wiÄc polecam wam też bo wiÄkszoÅÄ z was tak jak ja jej nie usÅyszy
michael –
Iâve had it for a year and no problems, great sound
marex77 –
I have been using this amplifier for a month now. It is working without any issues. The build quality of the amp as well as the adapter is very good. Looks tiny besides my old amp.My Old amp stopped working so am using this amplifier as an temporary alternative to power a set of Solidaire SS100 bookshelf speakers with a 12-inch woofer, a 4-inch midrange, and a 1-inch horn tweeter with impedance of 8 Ohms.Bluetooth range is also good. Comparable to my existing Logitech Bluetooth adapters.I have noticed it does not get warm on long usage when listening at acceptable volumes at home.The audio quality is flat and commendable in the Fosi amp, but I seem to miss the warmth my old Solidaire AS1200D amp provided. So, I tend to boost the lows and mids from the equalizer to get the desired effects.My decision on buying this over Aimyia amp was swayed because FOSI provide a warranty on their product, but Aimyia brand amps have no such mention in their listings.
E. Kamp –
Mehr Platz braucht es nicht. Mit der neuen Class D Endstufen-Technologie braucht es auch nicht mehr so klobige Verstärker (ich hatte sonst Class B und Class AB), ich bin E-Ingenieur und habe die Details des verbauten TPA3116D2 von Texas Instruments geprüft.Die Technik ist in Ordnung so.Das Foto zeigt, wie klein und fein sich das Gerät in mein Regal einfügt.Ich nutze das Gerät BT20A zum Befeuern meiner Magnat Monitor Supreme 202, die in meinem Büro stehen.Das Umschalten zwischen Bluetooth und Chinch funktioniert wie erwartet.Ich bespiele den Chinch Eingang über die Kopfhörer Buchsen meiner Laptops. Wenn ich eines meiner Smartphones über Bluetooth verbinde, schaltet es von Chinch auf Bluetooth um, wenn ich Bluetooth wieder entkopple, geht er wieder zurück auf Chinch. Chinch und Bluetooth haben geringfügig unterschiedliche End-Pegel, aber das ist vertretbar, selbst für mich als Perfektionisten.OK, ich würde dies Gerät wahrscheinlich nicht an meine Teufel Ultima 40 im Wohnzimmer hängen wollen.Da geht es eher um die Anzahl der Eingänge, von den Werten ist das Gerät besser als mein derzeitiger Onkyo Endverstärker.Aber grundsätzlich steht dem technisch nichts entgegen, wohl eher “psychologisch”.Das externe Netzteil ist immer an und die blaue Kontroll-Leuchte leuchtet immer, das ist nicht so schön, aber erträglich.Die Anschlüsse sind OK, Chinch wie gehabt, auch wurde technisch etwas verändert zum Vorgänger, also wurde es weiterentwickelt. Lautsprecherbuchsen sind Banane, etwas kleiner als von mir bekannt (ich hab es nicht nachgemessen), aber zusätzlich kann man auch die Litze ohne Bananenstecker wie üblich dort anschrauben, die Stifte haben das dafür übliche Bohrloch.Ansonsten für den Preis völlig OK, hat der chinesische Hersteller ganz gut gemacht !Schau’n wir mal, wie lange es hält.
Abraham Alberto Guevara Sánchez –
Fácil de instalar, el ajuste es fácil, me agrada mucho el sonido resultante.