Home  > Guitar Pedals and Effects By Brand > Electro-Harmonix Pedals > electro-harmonix QTRON Envelope Controlled Filter electro-harmonix QTRON Envelope Controlled Filter SKU: QTRON Price: $ 144.99 Availability: IN STOCK - Ships in 1-2 Business Days  Add to Cart  Shop With Confidence  All personal information you submit is encrypted and secure. Your information is not shared or given to outside parties with the exception of the necessary components in completing your order.   Product Description   This product comes in a unique design, equipped with many useful features!   Brand electro-harmonix Information Specifications: Switchable up/down filter drive switch Variable FIlter Peak control Hi/Lo range control Selectable LP, BP, HP and Mix (BP and Dry combined) filters Variable gain control and overload indicator Switchable boost feature (disengages preamp section) Effect and direct outputs AC operation with LED effect indicator Product Type Guitar Pedal