In the 25 years I've been playing bass I have truly used effects a handful of times, I never find could applications for it in live situations, so this unit has never even been used on stage by me. I am the second owner. Anyways, it's a great working order and I have the power supply. No manual, but they are online for free............I'd be interested in a trade for a pedal, let me know what you got. Otherwise I'll go $100 plus shipping or make me an offer, it's not being used.......I've linked to a pic online, mines just like all the others, not many scratches and works GREAT!!