Used Donner mod square Effect Processor

The used Donner Mod Square Effect Processor is in great condition and delivers versatile modulation effects including chorus, phaser, tremolo, and more. Compact and sturdy, it features 7 selectable modes, true bypass for clear signal flow, and a simple three-knob interface for easy control. Perfect for guitarists seeking quality effects in a pedalboard-friendly design, this unit operates on 9V DC power and offers warm, dynamic sound shaping for stage or studio use.