Go to www.rockbeachguitars.com and check the side menu for "CigarBox Amps" and you will also find a nice clip in the "listen to them" link. You can also use them to drive headphones with the addition of a 1/4" mono to stereo adaptor. I have driven 2x15 and 4x12 cabs with it very effectively (hard to talk over it) Boggs