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

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!

This is a great little (and it is tiny) Bluetooth receiver. We just bought a house that had inside and outdoor speaker pairs.I found that the wires for each pair terminated in the utility room. I had no way of using these speakers like I wanted. But I found this little powerhouse and am now able to listen to music and podcasts from a Bluetooth connection.Note: Because I had two different pairs of speakers, I also purchased this handy little selector switch:https://www.amazon.com/dp/B000NJHAFQI hooked up the speaker wires to the selector switch, and then with a couple of spare wires tied the selector switch to this receiver and it works like magic without the possibility of impedance damage to any of the speakers.In all candor, I used ChatGPT to figure out all of this. The AI selected both products and walked me though the installation. Pretty slick.Great results!

I’m an old guy with over 300 gb music on my computer. I had 2 really good Denon bookshelf speakers sitting around collecting dust. I got tired of listening to music on computer speakers and wanted an upgrade. This small amp took care of it for me. I just needed something to power the Denon speakers. This small amp is really great. Nice and simple. Plug in the speakers and a source for music and you’re done. The bluetooth feature works well as I can stream from iPad or iPhone. This is a great little amplifier that now allows me to listen to good speakers and music from my computer. I think it was a great purchase.

I've purchased 2 of these. Both work great, had them over a year. each one is wired to 6in polk audio speakers. 2 in the kitchen (one receiver) and 2 in the back porch (another receiver). Sound great in the kitchen, outside in the patio it rattles, but that's because of the metal it's cut into. (I have a barndominium). The only reason for the 4stars is because I have a problem staying connected to bluetooth when I am outside with my phone, it gets real static-y. (both receivers are in my kitchen in a cabinet). but i'll blame that on the metal walls and sprayfoam it has to go through. All in all a great product, i will be buying a tthird one here soon, for my pool patio!

I use this in the garage with my Alexa but it will also use Bluetooth to connect to the television(also in garage),laptop or phone. I used the old speakers from my old broken stereo and they have never sounded this good. The only problem I have found is if you have a active connection(BT) to a device but are not using this for the sound ( like using the built in speakers on television) it will start to build up some heat. If being actively used for sound I have never noticed any heat coming off of it.

This is a small amp, but it is plenty capable of powering my mid sized bookshelf speakers. The sound quality is great for the price point, and the Bluetooth has low latency and a pretty good range. My only complaint is that the terminals are small and close together, but that’s pretty expected for a small class D amp. Easily solved with some banana plugs. Overall, very happy with the purchase.

Our older system was massive! This one is so tiny and compact and does its job well!

I had these wired wall speakers that I didn’t know what to do with. I ordered this and got them working in about 1 minute and now I can stream from my phone or listen to my tv through high quality on wall wired speakers. It’s a little tiny amplifier so I didn’t need a big bulky receiver. Highly recommend but think about what adapter you might need to connect your tv bc I had to go form rca on the amplifier to hdmi and order another thing, but could still use it for my phone. I noticed my tv gets a little fuzzy though so I am wondering how to reduce what I would call interference