Used MXR M133 Micro Amp Pre Effect Pedal

Boost your tone with this used MXR M133 Micro Amp, a compact preamp/boost pedal in good condition that adds up to +26dB of clean gain without coloring your sound. Ideal for pushing an amp into natural breakup, lifting solos, or compensating for pickup differences, it features a simple single-knob Gain control, true bypass switching, and rugged MXR roadworthy construction. Runs on standard 9V power for easy pedalboard integration.