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The Fosi Audio BL20C is a compact 2.1 channel stereo amplifier featuring a Class D TDA7498E chip that delivers up to 320 watts of clean power. Equipped with Bluetooth 5.0, U-Disk playback supporting multiple audio formats, and versatile RCA inputs, it drives passive speakers and powered subwoofers with hi-fi sound quality. Its intuitive controls for bass, treble, and volume provide a customizable listening experience, making it an ideal upgrade for home audio enthusiasts seeking powerful, flexible, and space-efficient amplification.



















| ASIN | B077QPTPVW |
| Audio Output Mode | Stereo |
| Audio Output Type | Speakers |
| Best Sellers Rank | #57,902 in Electronics ( See Top 100 in Electronics ) #338 in Audio Component Amplifiers |
| Brand | Fosi Audio |
| Color | Black |
| Compatible Devices | Smartphone, Speaker |
| Connectivity Technology | Bluetooth, USB |
| Connector Type | RCA |
| Control Method | Touch |
| Controller Type | Android |
| Customer Reviews | 4.5 4.5 out of 5 stars (914) |
| Format | WAV, WMA |
| Item Weight | 2.3 Pounds |
| Manufacturer | Fosi Audio |
| Model Number | BL20C |
| Number of Channels | 2 |
| Other Special Features of the Product | Volume Control |
| Output Power | 320 Watts |
| Output Wattage | 320 Watts |
| Surround Sound Channel Configuration | 2.1 Channel |
| Unit Count | 1.0 Count |
| Warranty Description | 24-month manufacturer |
| Wattage | 320 watts |
| Wireless Technology | Bluetooth |
U**H
Great 2.1 speaker + sub solution
This speaker amp works very well. I connected 2x 6ohm 120w speakers, and a 130w sub and they sound great. SUMMARY: I had a 5.1 surround sound system (2010 model) but the receiver died. The speakers I had for it connected through the bare speaker wire pinch connectors (no banana plugs or RCA). This amp had the connections I needed for those speakers. I bought some banana plugs to go with it to make the setup easier (I would recommend this). I'm no audio expert so I can't tell you how this would work as a DIY amp for an audiophile setup or how amazing the audio quality is compared to other products on the market. I can tell you that this was just about the ONLY 2.1 amp I could find for the speaker and sub that I had. Build quality simple and is not flashy; but it's solid and looks as the picture shows. It doesn't heat up like my old receiver did. It is pretty small so that could either be great, or not so great--so you decide. It's about the size of my hand. I WOULD recommend this amp. With that said the quality of sound is good for me. I just needed 2 speakers and a sub for my PC and this amp powers them just fine. It's rated up to 200w and 12ohm. I listen to music and watch videos using speakers, but I play all my games using a headset. The system gets pretty dang loud and so does the sub. (obviously compared to 5.1 it's not as powerful). You get the idea of why I got this though. Read the instructions first before you hook it up to your power. This comes with an AC-DC converter (much like your laptops) that is rated for 19v DC. Needless to say there is a lot of power initially going to the capacitors. So connect it to the amp, then the wall. Not vice a versa.
S**P
Blown Away!
Although I had watched many great reviews on this item, such things remain very subjective. I had fairly high expectations from the reviews, but still really didn't know what to expect. I was able to compare it to another popular budget brand unit in a similar price range. Although this other unit was built well and had a bunch of great features....in terms of sound and power...there was absolutely no comparison. I was amazed at the clean power and volume of the Fosi. I first ran it with Polk Mini Monitors which are small bookshelf speakers with 5.25 drivers. I just couldn't believe what I was getting out of those speakers. I then switched to a much larger set of floorstanding speakers with 8in drivers. Again... Just Blown away! This little Fosi had no problem driving them with great sounding bass, mid/high clarity and plenty of headroom. I honestly don't think I would ever have to turn this unit up beyond 12 o'clock. The Fosi is built well, the Bluetooth works great, I love the USB input, it sounds awesome and the price is more than right for what your getting. It's tiny and puts out good clean power. I wish I had some 3 way speakers with 12in drivers to test this on. In any regard, unless you need something highly specialized, this amp should make you very happy. I highly recommend this Fosi product!
A**J
Great Amplifier, but adjusting settings can change quality drastically!!
So to preface, I am not a speaker audiophile, but I do think I can hear differences at most quality levels of speakers. My current setup is meant to get the best bang for my buck ~ $300, with 2 T15 Polk passive speakers + 1 PSW10 Polk Powered Subwoofer + Fosi Amp BL20C I was originally having an issue with stronger bass hitting songs with soft entries of bass and vocals. It required turning my devices audio output to max AND turning down the amp's dials for treble and bass. The amplifier for some reason (I'm not a speaker expert) would not allow for strong bass hits and entries of sound if the audio input wasn't maxed and the bass knob wasn't turned all the way down. I wish the amplifier would allow me to adjust treble and bass without compromising on its performance. Other than that, this amplifier does the job solidly, Bluetooth is strong and reliable so far, audio seems well balanced from my classical music to my rap beats, but requires tinkering on my devices output rather than the amplifier's settings. I highly recommend my setup as long as you don't expect to play around with bass and treble on your amplifier!!!
M**N
Surprisingly capable small amp
For starters, this is only after a couple hours of continuous usage, so things may change. For now, I'm very happy with this thing. I ordered it and some Micca RB42s and snagged some Memphis Audio speaker wire from a local store. So this thing paired instantly to both of my phones and my tablet, and the rca input connected to my record player was problem free. Front controls feel nice and have notches as you turn them. Buttery smooth. I haven't tested the sub output yet as j don't own a sub, but that should also work just fine with the right sub. Construction feels nice and heat management seems fine after these couple of hours so far. As for sound quality, I'm new to amps and passive speakers, but this is pushing the Micca's really well and everything sounds wonderful. No noticeable distortion or anything but I haven't cranked it yet out of respect for the roommate. Maybe when he's gone for a day... Chassis feels solid and durable, but not sure if it can be easily disassembled for people who want to tinker or change op amps. It's small size really belies a lot of clean power here and I'm very happy. My only grope so far is for when using speaker wire instead of banana plugs, the holes to put the wire through at the back of the amp are very small, only a bit larger than the 16 gauge wire I'm using. Won't be an issue if you're using banana plugs, but do keep that in mind if you're using just the wire. So far I'm super happy with this little thing. Very impressive.
P**O
Ho recuperato le mie vecchie Tannoy Reveal dopo venti anni, dopo aver ascoltato musica da piccoli device. La potenza è all'altezza, ma ascolto a volumi relativamente bassi. La qualità è comunque impressionante per un piccolo aggeggio. Equilibrato il suono, ed utili i controlli di bassi e alti per dare più chiarezza alle mie vecchie casse monitor da studio. Raccomandato.
V**T
Etonnant le son pour ce petit ampli avec des enceinte cabasse et un lecteur audiophile Sony. C'est simplement extra.
K**A
Super top qualité
M**K
Excellent purchase , got it at very good deal price . Bluetooth works fast and perfect . Very easy to install and pair .
J**Z
Überraschend guter Klang für den Preis. Der Verstärker klingt neutral, klar und ausgewogen, keine übertriebenen Effekte, sondern ehrlicher HiFi-Sound. Höhen sind sauber, Mitten natürlich, Bässe kontrolliert. Auch der Sub-Out funktioniert zuverlässig. Bluetooth-Pairing ging problemlos, Verarbeitung wirkt solide. Ideal für Schreibtisch-Setups oder Zweitanlagen. Ermüdet auch bei längerem Hören nicht. Klare Empfehlung für alle, die einen kompakten, ehrlichen Verstärker suchen.
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