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

Add classic funk quack and dynamic sweep to your tone with this used Electro-Harmonix XO Q-Tron Plus Envelope Filter in great condition. Designed by Mike Beigel, it delivers expressive envelope-controlled filtering with selectable Low Pass, Band Pass, and High Pass modes, plus switchable Q (peak) and sweep direction for everything from subtle wah-like movement to bold synthy bursts. Compact XO enclosure, true analog vibe, and standard 9V DC power operation.