Used Donner Harmonic Square Effect Pedal

The Used Donner Harmonic Square Effect Pedal is in great condition and delivers dynamic pitch-shifting capabilities with 7 modes including up, down, and detune. It features true bypass for pure tone and simple controls for pitch, blend, and mode selection. Compact and durable, it runs on a standard 9V DC power supply. Perfect for creative guitarists looking to expand their sound with harmonies, octaves, or unique modulation effects in a pedalboard-friendly size.