Fosi Audio TP-02 Subwoofer Amplifier Home Audio, Mini Bass Amp Mono Subwoofer Amp, with TDA7498E Chip 220W Volume and Frequency Control, for Powered Passive Subwoofers Bass Shakers

I am impressed. I just build a DIY subwoofer for my home theater. Had to build a specialty box because it had to fit between the back of my couch and the wall. Only had about 5-6" to work with. So, I had to build my own. Obviously I couldn't install an amplifier in such a shallow box, so I bought this thinking it was worth the try. I AM IMPRESSED. I did a great job on the subwoofer. While not very deep, it is large in length and height. I connected this amplifier externally, and I have to admit.... I am totally impressed. So clean and quiet (until music/movies are playing). Highly recommend it. If you have a subwoofer with a burned out amplifier, DON'T THROW IT AWAY. Just open it up, disconnect the speaker wires from the internal amplifier, extend the speaker wires outside of the cabinet, velcro this amp onto the existing subwoofer and connect the wires. Perfect repair. Now; if you are trying to replace a 400-1000 watt amplifier, well this is only 220 watts. But seriously..... unless you're in a car with a little weenie complex, do you really need more than 220 watts. Anyway; for the NORMAL person, this is a great amplifier for a DIY subwoofer build or to save you old subwoofer that has a broken amp.

I used this to replace a blown amp on an older Klipsch subwoofer. It works great and pushes it pretty hard. It pounds harder than I expected. Great amp!

I used to power a 12 inch subwoofer. Seems to work well

Seams to work fine.

I used this to replace a defective plate amp in a 20+ yr old JBL subwoofer. Sounds great!

This is a small but mighty subwoofer. Sound quality is excellent.

I installed this on Polk PSW505 that had a bad amplifier and was quite surprised. So far, so good. Beyond plenty of power.

Powerful little guy! Works great!