Review on Bluetooth Amplifier Yeeco Subwoofer Protective by Laurie Thomas

Very strong subwoofer noise, amplified when you actually touched the base tuning knob. The speaker terminals were not securely fastened, they moved and dangled a bit when connecting the wires. When switched on, it sparked noticeably. Packed it up and sent it back free of charge within an hour of receiving and testing it, the benefit of buying through Revain. Speaker and PSU work fine with another 2.1 amp I have, no bluetooth, I tried/used an old amp before and after trying this unit so I know it was that amp.