HiLetgo HiLetgo YDA138 220W Dual Channel Digital Amplifier Board Power AMP Module DC9-14V

I don't have the equipment on hand to measure power or flatness of the amp but by my subjective test it sounds great. I get plenty of volume with my two speakers, if the input volume (output from the computer or my phone) is all the way up I can't turn the volume of the amp all the way up without the volume becoming painful. So it provides plenty of volume for a normal size room. I think it would do well in a larger space. With the input off and the volume all the way up I could just start to hear some noise if I put my ear close to the speaker which I consider plenty quiet. I couldn't find any documentation but the inputs and outputs are clearly labeled and I didn't have any trouble hooking it up. I hope to use this to build a portable speaker system.

Initially, this amp sounds good... better than 2024? Hard to tell. After very short period of playing (1/2 hour?), it started to get "glitchy" and cutting in/out which seemed to come from some sort of loose connection in either the power or input connector. However, it died comletely before I was able to investigate further.