DIY Audio Amps
This Amp3 is one of the amp models from 41Hz Audio. I have my eye on the Amp7, this looks like an interesting design. “I have to say, for $25 it puts out some awsome sound! Takes a few hours to put together though. You have to wind your own torroids. I used 15-minute epoxy to ensure the torroids will be solid in the car. 25-watts per channel at 4ohms.