Electro Harmonix Doctor Q Envelope Follower (Pre-Owned)

Venturing beyond mainstream stomp boxes, some effects use clever analogue filters to alter the signal. This niche group of pedals includes everything from basic wahs, through pitch shifters and envelope filters to ‘synths’ and ring modulators. 

This pedal has been used but is in great condition for it's age. This pedal requires a positive tip power supply (not included).