Audio Amplifier Board with BT 5.0, 10W 15W 20W 2.0 Dual Channel Stereo Wireless Mini Amp Module with Protective Shell

I don't often buy things that don't yet have a review, but at this price I figured I go for it. This thing is awesome. It is tiny, less than half the size of a credit card. And it is loud! Also, the Bluetooth antenna is great! I can walk around my house with my phone and I haven't gotten it to cut out at all. I have a Bluetooth speaker that cuts out if I just go to the other room.I ran it into 8ohm speakers with 24v\1a and 12v\5a power supplies I have on hand and both work great. I did notice that the board ran quite warm with the 24v power supply. The instructions do say that if you run 24v to use a heat sink. The board itself is very neat and the black PCB is a nice touch. The included acrylic and standoffs are a nice touch.I only have two criticisms, which are minor especially considering the price:1) the included DC plug is wired incorrectly. The red wire is negative and the black is positive. The board itself is marked correctly. I could not initially get it to work due to this. I sent an email to the address on the documentation and they responded very quickly and let me know if the problem. I swapped the wires and it worked perfectly. The support person said that they are working to update the included documentation.2) The beeps that let you know it turned on, volume maxed, Bluetooth connected, and Bluetooth disconnected are fairly loud. The nice thing, though is that the volume maxed beep does not interrupt the audio stream.I've only had this thing for a few days. I will update it if anything drastically changes.

This little thing is foreal! and it pumps out some nice sound for such a little bluetooth amp. It's very small and delicate, but boy can this thing handle some power. I've had a 200w subwoofer and a 100w midrange woofer and this little Amp had no problem,never over heated or had any problems with it. Definitely worth the money because this unit and 2 20-30w speakers and your in business. I have 2 of these and to of a different kind and I love them. For the chump change they coast! It's way,way,way worth it to get some while there hot and the price is low.

I was thinking of taking off a star due to the assembly required for this but I have changed my mind and I now think it offers needed flexibility.I concur with the other posters. Loud and just worked.

Purchased two of these and they do what I expected them to. I really like the small size which can be mounted anywhere.And wont take up much room. I run each on a 12v 2a power supply and they work flawlessly on the application that I use. The volume does slightly distort a bit at higher volumes but I attributed to the speakers I washed using, more specifically the crossover as well as the power supply. I'm sure with a 20v or higher these will sound better since they are rated up to 24v. Note that they do become pretty warm with the higher voltages.

This says it does 20w speakers. I had 2 15 watt speakers 4 ohm. Which according to this says 12v is best. So I used my 3D printer 5 amp 12v supply to make sure it had enough juice without any voltage dipping. Turned it half way up and on every beat it cut out. This has no filters on it and very tiny capacitors compared to other 10$ Class D amps. Also you cant change the BT name its always some chinese name. Although its its connected you cant request it and interupt it so thats good. But it didnt work for what I needed so I returned it. Will have to get a different one.

I have some old Kenwood speakers that I have had since I was in the Navy a long time ago. These speakers are over forty years old but still look good. I was considering throwing them out because hooked up to my receiver they sound bad. I bought this little amp and hooked them up with just a 12V power supply and they sound great. They sound like they always did. Since the amp was so cheap I bought two. They other one I hooked up to some shelf speakers in the bedroom and they sound good too.

I didn't expect it to be so small, but it works great!

It basically works, but my phone won't connect to it consistently. Most days, I need to go into the phone's Bluetooth settings and "forget" the device, then pair again. Sometimes the phone gives me a pop-up that directs me to forget and re-pair "for your security" when I try to connect.I don't have this problem with any of my other Bluetooth devices, just this one.