Used Electro-Harmonix XO Q-Tron Plus Envelope Filter Effect Pedal

Add expressive funk and synth-like sweeps to your tone with this used Electro-Harmonix XO Q-Tron Plus Envelope Filter in great condition. Featuring responsive envelope-controlled filter action, selectable Low Pass, Band Pass, and High Pass modes, plus Peak (resonance) and Gain controls, it delivers everything from subtle quack to deep, vocal wah textures. A built-in effects loop lets you place other pedals within the filter path for even more creative shaping. Powered by 9V DC.