Amazon.com: Nobsound NS-03G Subwoofer Amplifier 100W Mini …

I bought one of these and used it to power a bass shaker under my office/gaming chair. It worked well in that capacity for a year, but then stopped working, though the light still came on. EDIT: This turned out to be downstream from the amplifier, and not the amplifier’s fault. The amplifier does its job nicely as long as all the wiring is good.

https://www.amazon.com/Nobsound-NS-03G-Subwoofer-Amplifier-Version/dp/B072KDNW3F