Date Region Description Price Seller
USAOriginal pre owned Electro Harmonix Dr. Q envelope filt...$59.00
USAGood working condition, cosmetically what you'd expect ...$80.00
USAFun pedal. everything works. ![Electro-Harmonix Doctor...$92.00
USA1978 Electro Harmonix Doctor Q envelope filter in very ...$150.00
USA Pot dates to 1977. Doctor Q pedal is used and in good...$159.00
USAOriginal pre owned Electro Harmonix Dr. Q envelope filt...$59.00
USAInternal pot was moved to the outside to have more cont...$129.00
USAThis doctor Q is in very good condition (doesn’t come w...$93.00
USAElectro-Harmonix Doctor Q Envelope Follower pedal IN BO...$99.00
USAOriginal 70's Doctor Q Envelope filter. This pedal has ...$125.00