Review on Clyxgs TPA3116D2 2.1 Channel Digital Power Amplifier Board - 100W+2x50W 5.0 Wireless Audio Stereo Amplifier for DIY Speakers - DC12-24V by Omar Allen

I wasn't expecting much from this amp but I was pleasantly surprised. I wouldn't recommend this for desktop/computer speakers, maybe a shop PA. There's no highs (even with adjustment) making speech sound like it's coming through your toes, the bass is boomy and not deep at all, but for a REALLY cheap amp that's pretty normal. I made sure the polarity was correct and checked both polarities for the speakers, it didn't really matter. I even know this thing has Bluetooth, I haven't seen any ads anywhere). It's called Hazy Audio and it doesn't require a password to connect. If you connect a 3.5mm jack it will assume you want to listen to that source and automatically switch from Bluetooth. The 3 controls are for bass, stereo volume (just your 2 speakers) or master volume. When I turn the stereo volume down, the speakers hiss and hiss, so just leave that on.