Electro-Harmonix DOCTOR Q Envelop Filter Posted on January 21, 2025 by neworld $50.90 DOCTOR Q Envelop Filter Out of stock SKU: NDRQ Category: Pedals Description Description Official distributor for all brands listed on the site.Free Returns for 30 days – No questions asked .Contact us at anytime calling 305-371-7170 Related products Walrus Julia Chorus/Vibrato $199.00 Read more Supro SUPRO DRIVE PEDAL $219.00 Read more Pedal Electro Harmonix Nano Pog $199.00 Add to cart Catalinbread Formula No. 55 (Vintage Fender Tweed Deluxe ) $179.99 Add to cart