Review on 🔊 Nobsound Mini Bluetooth 5.0 Power Amplifier - 100W Hi-Fi Stereo Class D Audio Amp, 2.0 Channel Wireless Receiver, Lossless Music Player, TF USB Home Speaker (Black) by Mary Beauchene

I mistakenly thought it was dead because I didn't know you had to hold the power button to turn it on or off. I took it apart out of curiosity and this is what I found. The amplifier IC is hidden but looks like a Texas Instruments TPA3116 IC. That's true 50 watts per stereo chip channel at 0.1% THD. Well! However, I noticed that the chip doesn't have a heatsink, so I'm not sure how long it will last at full power. Bluetooth works well and pairs quickly. The biggest downside to this amp is that it uses a 20v power supply which sparks every time you plug the cable into the back. I would recommend connecting the cable before plugging it in. For the price it works and sounds good.