

🎧 Elevate your home audio game with compact power and wireless freedom!
The Fosi Audio BT20A is a compact, high-efficiency Class D stereo amplifier delivering 200W total power (100W per channel) with Bluetooth 5.0 connectivity for wireless streaming up to 50 feet. Featuring advanced Texas Instruments TPA3116D2 chips, it offers low distortion, no audible pop noise, and customizable bass and treble controls. Designed for passive home speakers, it comes with a 24V power supply and a 24-month warranty, making it a reliable, space-saving upgrade for audiophiles seeking Hi-Fi sound without compromise.














| ASIN | B07BQC7GNL |
| Audio Output Type | Speakers |
| Audio Wattage | 200 Watts |
| Audio output mode | Stereo |
| Batteries Included | No |
| Batteries Required | No |
| Best Sellers Rank | #44,885 in Electronics ( See Top 100 in Electronics ) #65 in Hi-Fi Amplifiers |
| Brand | Fosi Audio |
| Colour Screen | No |
| Compatible Devices | Speaker |
| Connector Type | Bluetooth |
| Country of Origin | China |
| Customer Reviews | 4.4 4.4 out of 5 stars (8,967) |
| Date First Available | 22 May 2018 |
| Includes Rechargeable Battery | No |
| Includes remote | No |
| Item Dimensions LxWxH | 13.2 x 9 x 3.6 Centimeters |
| Item Weight | 680 g |
| Item dimensions L x W x H | 13.2 x 9 x 3.6 Centimeters |
| Item model number | BT20A |
| Manufacturer | Fosi Audio |
| Maximum Supply Voltage | 24 Volts |
| Minimum Supply Voltage | 12 Volts |
| Model | BT20A |
| Mounting Hardware | 1 electronic component amplifier |
| Mounting Type | Surface Mount |
| Number of Channels | 2 |
| Number of items | 1 |
| Output Power | 200 Watts |
| Product Dimensions | 13.21 x 8.99 x 3.61 cm; 680.39 g |
| Signal-to-noise ratio (dB) | 98 dB |
| Speaker Output Channel Quantity | 2 |
| Special Features | Built In Bluetooth, RCA |
| Specification Met | Meets Specifications |
| Tuner Technology | AM |
| Voltage | 230 Volts |
| Wattage | 200 Watts |
| Wireless Type | Bluetooth |
M**7
Works Good
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.
@**!
Small on size big on sound.
Too tiny, infact the provided adapter brick is larger. Felt little warm after couple of hours of usage. Hopefully it will last for years to come. Have hooked my LG FB162 System speakers and the sound coming out is good. Even at low volume can get clarity. Bluetooth works like charm even when I take the source device in a different room still sound doesn't distort. Wish they have provided a remote or an app to control Bass and Treble.
S**G
Fantastic item for bluetooth
Being a Class D amplifier it is very compact in size, more so as the power supply is separated out by way of an adapter. The digital input (bluetooth etc) sounds great, if reasonably good speakers are used. However when analog input is there, the sound quality goes down remarkably. Therefore if the requirement is to use it with LED TV or record player (aux input), as in my case, better to go for Class AB amplifier for wholesome sound. That's why one star less.
M**N
Great amp with amazing value for the price
Amazing amp that does the job well! Bluetooth sound signature is a treat for the ears. I wasn't happy with the sound via analog/RCA. But when I paired it with a decent dac it was perfect! Easy to operate.
S**K
Good quality sound especially at this price
Not only is the sound quality good, its very compact and has practically no setup process. A boon for those good speakers stranded without an amp
U**E
Best Sound quality of tiny item
Very good & economical at this price . Full paisa vasool .
R**L
Perfirmance
So far working well👍
A**R
Compact, easy to use
Works wonderfully for my old Sony AZ2D system. The original Sony touch panel was defunct and this Fosi module has brought my amazing speakers back to life. The Bluetooth is superb. No pairing, no “sleep mode” just leave it on and connect anytime without a fuss. Compact, solid metal construction, monochrome looks, and a vintage mechanical flip-switch for powering it in and off.
N**F
Works perfectly! I used this to fire up a pair of outdoor speakers that came with our house, and it’s been flawless. Super easy to connect via Bluetooth, and the sound quality is great — clear, strong, and consistent. I’ve left it on pretty much all the time, and it’s been running solid for about 8 months with no issues at all. For the price, this little amp delivers big performance. Highly recommend.
A**M
Mój amplituner Onkyo zajmował miejsce w moim minimalistycznie urządzonym salonie , dodatkowo nie posiada bluetooth , więc zakupiłem Fosi Audio , i.... Nie jestem melomanem i pewnie dla tego :-) nie słyszę różnicy między tymi wzmacniaczami , więc polecam wam też bo większość z was tak jak ja jej nie usłyszy
M**L
I’ve had it for a year and no problems, great sound
A**Z
Fácil de instalar, el ajuste es fácil, me agrada mucho el sonido resultante.
O**O
ich habe diesen kleinen Verstärker für meinen Camper bestellt, um auch beim Camping in guter Qualität Musik hören zu können (zusammen mit zwei kleinen Elac Boxen) selbst über Bluetooth ist der Klang recht gut und mit den Bass- und Höhenreglern kann man noch etwas optimieren. ich betreibe den Verstärker direkt mit 12V aus der Bordbatterie, so kann ich zwar die Leistungsfähigkeit nicht voll ausnutzen, aber die erzielbare Lautstärke genügt mir. im Grunde sind es vier Dinge, die mich bewogen haben, diese Verstärker zu kaufen: - er macht einen fertigen Eindruck und ist wirklich sauber verarbeitet -der Klang ist zu jeder zeit sauber, schnell und sehr gut auflösend, ohne Spitz oder nervig zu sein -das Ding ist so winzig, das passt auch in das kleinste Wohnmobil - der Wirkungsgrad ist fantastisch, d.h. ich kann ewig lang Musik hören, ohne dass meine Batterie schlapp wird. ich bin, wie man wohl deutlich hört, sehr zufrieden und würde mir das Gerät jederzeit wieder kaufen und auch Freunden empfehlen. Nachtrag: ich habe das Teil auch mal zu Hause über das mitgelieferte Netzteil an meine Lautsprecher angeschlossen (Hörner) Hier vermag der Zwerg ein wahres Inferno zu beschwören und steht zumindest klanglich meinem Nubert Amps in nichts nach. für diesen Preis habe ich noch nichts Besseres gehört Es gibt auch noch zwei Geschwister dieses Gerätes, den BT10 a ( den habe ich auch) klanglich fast genauso gut, halbe Leistung und noch kleiner und günstiger. und den BT20pro, den ich allerdings noch nicht gehört habe
Trustpilot
3 weeks ago
1 month ago