

🎧 Elevate your soundscape—compact power that commands attention!
The Fosi Audio BL20C is a compact 2.1 channel Class D stereo amplifier delivering up to 320W of power. Featuring Bluetooth 5.0, U-Disk playback supporting multiple audio formats, and RCA inputs, it drives passive speakers and powered subwoofers with precision. Equipped with bass, treble, and volume controls plus smart protection features, it offers a customizable, high-fidelity audio experience ideal for home theaters and professional setups.



















| ASIN | B077QPTPVW |
| Best Sellers Rank | #36,922 in Electronics ( See Top 100 in Electronics ) #190 in Audio Component Amplifiers |
| Customer Reviews | 4.5 4.5 out of 5 stars (904) |
| Date First Available | November 24, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.29 pounds |
| Item model number | BL20C |
| Manufacturer | Fosi Audio |
| Product Dimensions | 4.84 x 4.57 x 1.3 inches |
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.
P**N
Audio Performance Impresses
The Fosi BL20C 2.1 amplifier form factor is small and compact. It conveniently fits nicely in a variety of different locations. The case is solidly built metal. The control knobs rotate smoothly with stepped detents. It fits nicely just beneath one of my monitors. Audio Performance Impresses. The amp power pumps out the loudness DBs upon demand. I run with the amp cabled directly to my PC. I bought this amp primarily for listening to music. Depending on the file format type, quality of the file source, and media type, the sound bass and treble defaults can vary quite a lot. The BL20C allows the listener to custom tailor and tune the listening experience, based on preference and the variable sound source. I'm running a pair of Klipsch R-41M bookshelf passive speakers, along with a powered subwoofer Polk Audio PSW108. Both are 8 ohms. The BL20C allows me to custom control all the speakers from a single control source. I found 1st setting the PC OS 'sound' level at about 80%, then secondly tuning the amp bass/treble control levels to the best front speaker sound, then 3rdly setting the independent active sub bass woofer volume level and low pass filter level. After this, I only needed minor amp control bass/treble adjustments based on the music song and source. Just to see what my system was max ultimately capable of, I set the PC OS sound output to 100%, set the BL20C amp bass/treble controls to the middle position, played a musical song from a music file source that I had ripped from CD, then cranked up the amp volume gradually to max. It was very loud and clear. My speakers are rated for the amp wattage power output, so make sure your speakers can handle the Wattage output. My next BL20C test with the Bluetooth functionality. I found if I simply flipped the front panel switch to "BT/USB", the device started broadcasting a BT signal. My mobile device instantly recognized the signal. I added/accepted the BL20C amp device to my phone. Playing some songs from my mobile device, the BL20C received the music stream from my phone fine, then outputted the audio signal output to my speakers. Considering the music source was coming from a phone, the music quality, volume, and adjust ability was impressive. I still haven't tried out U-Disk features yet. The Fosi BL20C 2.1 amp accomplishes what I set out to do. I am certainly enjoying it. The interface versatility is definitely a plus.
A**R
Works well, Power supply is small (Beware)
I needed something outside to power my dual channel Polk Audio Atrium8 speaker. I actually went out and bought a Sonly receiver, your typical brick bulky receiver. I then found these little units and wanted to give them a try. I opted for this Fosi Unit I have the little thing mount behind the TV (On the back of the TV) so its out of sight type deal. Sound is great, better than the giant receiver One thing to note and there is another review about this, this power supply it comes with cannot produce 320w with the 24v/4.5A power supply. I upgraded the power supply to the 32v/5A and this gave me about 80W per channel and was good enough. I did email Fosi Audio support and asked what power supply is out there that can produced the 320W and they where unable to find me an answer. So why they have this listed at 320W, I don't know but just be careful. I think out of the box you will get 60W per channel at best. With this I give it a 4 star review. Aside from this the unit does well. Have it hooked up to the TV so football games are nice and clear and the unit also has Bluetooth
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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