220W +220W+350W Stereo Bluetooth Amplifier Board 2.1 Channel, 2 x TPA3251 Chips Stereo AMP Board DC 12-38V, Bluetooth 5.1 and AUX Inputs, for DIY Wireless Speakers

The media could not be loaded. I have 2 of them an they work amazingly, but 24v is the best range I found there can be overheating issues in the 36 volt range.

Right out of the box, I powered this 2.1-channel Bluetooth amplifier board with my own 36V 10A power supply, and pairing it with my phone was seamless—big plus. Sound quality is decent, and I specifically chose this model for the subwoofer output, which works as expected.One small annoyance—the cheap plastic knobs were out of alignment, so I had to remove and reinstall them. Not a dealbreaker, but still. On the bright side, the built-in fan is a nice touch, keeping everything cool during use.Overall, a solid little amp. Just wish they put a little more effort into those knobs!

The media could not be loaded. I have three of these now, all for projects and I have been so busy I just haven’t taken the time to fire one up. Some obvious things, you need 3 passive speakers, one a sub. And a weird power supply. Amazon sells all these in various forms. Write me if you want to know more. These are awesome units. They are well constructed, clean, and compact. They have the right stuff as advertised. We will try to find out this week. I’m definitely all over these for making my AIO speaker units. Write if you want to know more. Pictures of ZAP_6, our first release, attached.

Very neat - works great! However, when you are really using it, it seems to get pretty hot. I would worry about it long term, make sure you put it in a well ventilated area!

This amplifier does everything it says it does, I can't say anything bad about it. hardly any hum

Kids room is like a teenager's car now

Awesome product! Built a Bluetooth speaker box powered by a Milwaukee battery. Going to make use of the subwoofer input and put in a 6.5 skar subwoofer! Can’t wait to hear the finished product

To start, I'm going to go through the pros first and then to my cons or concerns. As for power, two 220W and a 350W subwoofer channels can deliver excellent audio output to the right speakers. The dual TAP3251 chips improve sound quality as many DIYer audiophiles know, and being able to use 12V to 38V give us flexibility to use in multiple applications. I also like that it supports Bluetooth 5.1 although I wish it supported at least 5.2 to be more current.What I didn't like as much was the heat management. With such output power, it can get really hot and you will have to come up with some cooling measures, especially if you're embedding it in furniture, which is what I did. So keep that in mind. It is far from a deal breaker though.Another concern I have is about the size as it could be a bit too big for some projects. I had a plan for a second project of my own, but I know now it wouldn't work. This is not an issue per se as long as you know where/how you are going to use it and are aware of the space limitation.However, the bigger issue for me is the lack of built-in integrated equalizer settings. You can do it with external adjustments but I really like when it is built-in.Finally, despite the cons above, I would buy it again and again.