via this auction
"This was one of the last Prophet models made by Sequential Circuits and came late in their existance so it was one of the first analogue synthesizers to feature MIDI functions. It sounds great. There are so many workable sounds within the 600 and plenty of control over them too. Patch memory is available so you can save your sounds, but I would probably recommend putting a new battery in there and updating the unit.Before listing, I plugged it in and tested all the functions. She works great and sounds amazing..."










































