Electro-Harmonix Doctor Q Envelope Follower The doctor is in! A reissue of the classic envelope funk box from the 1970's, the Doctor Q responds to your picking dynamics producing different wah-like effects. You know you've heard this one before. If you didn't come to dance, then you don't want the funk! Our Web Price: £39.00 (Including V.A.T. at 20%) Order Quantity: