Used MXR M66S Classic Overdrive Effect Pedal

This used MXR M66S Classic Overdrive pedal delivers warm, vintage-style distortion perfect for blues, rock, or classic metal tones. In good condition with minor cosmetic wear, it offers rich, amp-like breakup and smooth sustain. Featuring simple controls for Output, Tone, and Gain, it’s easy to dial in expressive overdrive. The pedal includes true bypass switching for pure signal integrity when disengaged. Designed to run on a 9V battery or optional power supply (not included), the M66S is built into a robust metal chassis ideal for stage use. Whether you're boosting a clean signal or adding grit to your lead tones, this pedal is a reliable and musical choice for any guitarist’s pedalboard.