ZapWizard writes in regarding the mint tin amp – “www.41hz.com has some better versions of the t-class amps in DIY kits. I used two as amps for my Car PC, very compact…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. I can reach about 75 volume on the FM radio I am using to test with before distortion. That is beyond tolerable levels anyways. “ – Link.