Fosi Audio BL20C Bluetooth 5.0 Stereo Audio Receiver Amplifier 320 Watts 2.1 CH Mini Hi-Fi Class D TDA7498E Integrated Amp U-Disk Player for Home Passive Speakers Powered Subwoofer(with Power Supply)

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.

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!

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!!!

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.

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.

I ordered this unit based on multiple positive YouTube reviews. It arrived same day from Amazon, and properly packaged. It took literally 5 minutes to set it up. It connected/ paired to my Motorola cell phone's Bluetooth with no problems. The sound quality streaming YouTube Music via Bluetooth is excellent. The sound quality playing CDs through the RCA physical connection is much better than I have ever obtained using my 2000s era giant tuner amps. The sound was further enhanced adding Micca MB42X Gen 2 bookshelf speakers, and an older Aiwa subwoofer. I bought this amp partly because it is so compact so I guess I shouldn't complain that as a result there is not much space for connections on the rear. There is minimal space between the outputs to connect passive speakers, you have to be extremely careful to avoid the cable ends touching the wrong terminal. I solved this with a small piece of insulation tape on each connector. The only thing I "miss" is having a remote for volume and source control. As you can probably tell from my description I'm not an audiophile, I honestly don't understand what half the audiophile reviewers are even talking about. However I've been buying consumer quality and better stereo equipment for 50 years and I appreciate the quality of the product and sound that this little amp-that-could represents.

What a little beast! I had an old Logitech Z-560 set of 4.1 computer speakers from around 2003. The sub finally gave out after all these years, but the four satellites are fantastic still. I bought a newer Logitech Z-625 set (that claims 400W just like the OG 560s) - but neither the sub (6.5" vs. 8" long throw) nor the two satellites are anything close to the supreme quality of the Z-560. So after a little Chat with GPT, this Fosi BT amp to drive the four satellites and a sub-out to go to a dedicated sub became the idea. AND IT BANNNNNNGS! Just wired two satellites together to go into each of L and R, and it sounds better than the OG Logitech setup. I bought a 10" powered Klipsch sub to go with it, and it's insanely great. BT is just gravy on top, since these are plugged into a laptop+65" TV in my office and I don't need to use BT. But it makes it extremely flexible for use in a more mobile or patio environment. HIGHLY RECOMMEND.

I used to have a nice receiver for driving my Micca MB-42x and a subwoofer. But that died and I needed a 2.1 amp since my subwoofer was a passive device. Hence, I came across this interesting amp. I liked how you can fine tune the audio settings by simply turning the nobs. When I had my receiver, I had to push a lot of buttons to adjust. As soon as I plugged this in, I could hear a light hum. However, as soon as I played audio it sounded great. But when it was silent, this hum was going on. And the next day it would get worse. I work in a home office and hearing that humming was starting to drive me nuts. I tried many forms of troubleshooting here. I ran it with no inputs connected and there was no hum there. I tried plugging it in a different AC outlet and also trying to run on only one speaker to isolate the issue. Unfortunately nothing I could find would resolve this issue. Also, if I touched my hands on any part of the metal on the amp, the sound would isolate some more. I then reached out to Fosi on Amazon. I waited literally all day and they finally responded the next day to contact Fosi directly. And what is strange to me is that one of the email addresses is a hotmail account. I then sent an email with all my detailed troubleshooting to the two addresses and it took all day to hear back. They then wanted a video of me displaying the issue. I sent that out and then I never heard back. It may be a couple of days. Something interesting is that when I was looking at other 2.1 amps on Amazon such as Nobsound, they look very simliar to each other aside from the brand name. The adjustment nobs placement, size, and location were the same location. I researched Fosi on Reddit's /r/budgetaudiophile. The consensus there pretty much says to avoid Fosi as a brand. I done some more research and tried to find a 2.1 amp that doesn't look like this Fosi amp. I found one through Dayton Audio DTA-2.1BT. I ordered this one and there is no humming whatsoever. It's silent. and much better results than the Fosi. I also like how the knobs were bigger and easier to than the Fosi. Now in the end, it very well could be possible I just had a bad unit. However, now that I had this problem, I have to take customer service and warranty issues into mind. What kind of gives me a negative impression is that I had a very detailed email to Fosi describing all the issues.However, they then wanted a video and they still haven't gotten back to me after two days. It very well could be possible that is the norm of the customer service and who knows. Maybe they would have shipped next week. I also compared the warranty. Fosi gives a 18 month warranty + another 6 months if you register. The Dayton amp gives me 5 years and I haven't paid too much more money for it. In the end, you may get one of these amps and it works great. However, do your research to determine the best choice for you.

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.

Etonnant le son pour ce petit ampli avec des enceinte cabasse et un lecteur audiophile Sony. C'est simplement extra.

Super top qualité

Excellent purchase , got it at very good deal price . Bluetooth works fast and perfect . Very easy to install and pair .

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.