This pedal really is an oddball, brilliant idea executed very well that gives you the opportunity to pull out instant walls of sound whenever you feel like it. Definitely takes a few hours of playing to really get where the pedal sits in your arsenal, as it's tempting to just use it for everything, but really you gotta be clever with it to really make it work in live situations as i've found myself kicking it one in intense moments and it just kills the vibe. The tracking (most of the time) is impeccable on the 'chord' setting and capable of getting the signature glitchy bad tracking sound on 'classic'. One problem i've found on my unit and im certain this is a one off thing is that the note a 5th down is slightly out, and it's only this note i think but otherwise i can't fault it. An appropriate midi controller would be a good investment if the pedal becomes an integral part of your sound, as the sounds which work the best are quite fair apart on the selector. All in all a very versatile and usable pedal (standard 9v in), built well and a good investment if you really take the time to explore the musical possibilities.