Purchased used from a musical instrument store. The knobs are likely not original. Based on my amateur assessment, I've confirmed that it works without any issues. ※It operates normally at 18V, so it cannot be used correctly with a standard 9V adapter. Only the items shown in the photos are included in the sale. #Maxon #maxon #AnalogDelay #analogdelay #AD80 #Effecter #delay #delay Thank you for viewing.