http://www.drzamps.com One crazy awesome thing about the Zdrive, is you can utilize the Green, Germanium side, to enhance the overall eQ and spank out of a non Z amp. This is my pro jr, put into a http://www.mojotone.com Mojo 1x12 combo speaker cabinet, which is a very cool amp on its own, but I wanted to show how the Z Drive worked with a less expensive, no frills sort of amplifier.