Used MXR M133 Micro Amp Pre Effect Pedal

Boost your tone with this used MXR M133 Micro Amp, in great condition. This compact preamp pedal offers up to +26dB of clean gain, perfect for enhancing solos or balancing multiple guitars. Featuring a single Gain control, true bypass switching, and sturdy metal housing, it's a reliable addition to any pedalboard. Whether you're pushing an amp or leveling out pickup differences, the M133 delivers transparent, noise-free performance in a simple, durable package.