Review on 🔊 MakerHawk 2Pcs TPA3116D2 Two-Channel Stereo Amplifier Board: 2x50W High Power Digital Subwoofer Amplifier for Store Solicitation, Home Theater, Square Speakers DIY by Duane Kaul

The hardest part was finding a 12-24VDC power supply. Power for testing indoors, not in the car. I found a 12VDC adapter and connected it in parallel to my audio source. No problems other than determining the polarity of the adapter. This _said_ center is positive, but I don't fall for it. I put in a counter that told me yes the center is positive. Connecting the power cords, source, and speakers took less time than locating a working power source. All is well. I didn't test it at high volume, but at medium volume it sounds just as good as my big box amp. Update: I found an old laptop power supply (19v) that works great with the amp! The sound quality is really good at high volume, with almost no noise. I put it about halfway and set the iPad to its lowest setting for casual desktop listening. The heatsink was not glued, but covered with double-sided (hopefully thermally conductive) tape. Barely warm with a radiator. All in all a really great product at a great price.