Review on Enhance Your Home Theater Experience with Soundavo PSB-400DSP Class D Subwoofer Amplifier - 400W RMS/1000W Max Power, DSP, and LCD Presets Display by Jamil Fog

I don't really use this product for its intended purpose but it was the cheapest replacement amp I could find to power my Buttkicker LFE at the right power level. It seems to have worked well so far and the different options have allowed me to refine the setting. There's not really a precise volume control, but I just adjust the output on my receiver when needed. Overall, it does its job well so far without being too big, heavy, or expensive.