Used Donner HARMONIC SQUARE Effect Pedal

Used Donner HARMONIC SQUARE Effect Pedal in great condition, delivering bold harmonic textures and synth-like tones for guitar or bass. Featuring intuitive controls for fast sound shaping, rugged compact metal housing, and standard 1/4" input/output connections. Powered by a 9V DC center-negative supply, it’s pedalboard-friendly and ready for stage or studio, adding rich overtones, edgy character, and creative movement to your signal without sacrificing clarity.