Electro Harmonix Nano Q-Tron Envelope Controlled FilterThe classic filtering tones of the Electro Harmonix Q Tron have been compacted into a powerful and sleek new stompbox. The Nano Q Tron provides all the tonal expression and intuitive functionality of its predecessors for players looking to add that distinct funky element to their boards with minimal space needed. With controls to alter volume, filter sweep sensitivity, and peak filter bandwidth, the Nano Q Tron is a deeply customizable pedal with the