Review on 🔊 AIYIMA 200W Subwoofer Amplifier: Class D Mono Amp with Full-Frequency and Sub Bass Switching, TPA3255D2 Chip, Home Audio Sub Amp & DC 32V Power Adapter (Black-200W) by Leonard Herrera

Works well as an amplifier for regular speakers but I wouldn't use it as a subwoofer. I hooked it up to a 50w 4 ohm shaker and this amp will turn off if you try to turn it on too hard. Sometimes it works fine for a few minutes and then shuts down randomly. When this happens, both the amp and converter go ice cold to keep them from overheating. In addition, the power supply only has an output of around 150 watts, which means it cannot even deliver half of the advertised watts.