Get the sound that made the Classic 1970 Small Stone famous. Generates thick sweeping phase shifting with liquid transparency. Feedback color control adds a tingling swirl. Blues players dig the Stone s rapid rotating speaker effect. Country players add tasty seasoning to their chicken pickin . Metal-heads dig its jet plane swoosh.True bypassVariable rate control allows slow and smooth to rapid edge frequency sweepsColor switch adds Q and thins the moving comb filtersTough and compact die-cast chassis9-volt battery includedOptional 96DC-200BI power supply available