I have a t-rex chameleon and Im a typical guitarist I really know anything about this crap except how it sounds but it does work and I cant hear any difference if there is not enough power. I bought it pure on the video from the aussie dude who showed two stomps working on it …and it fits under my pedaltrain. As long as everything works (and it has for the last year) Im happy. please dont come back with stories over power,amps ohms and that sort of stuff….I make music not electronic gear