Used MXR M133 Micro Amp Pre Effect Pedal

Boost your tone with this used MXR M133 Micro Amp, in excellent condition. This classic preamp pedal delivers a clean gain boost of up to +26dB, perfect for solos, balancing guitar outputs, or pushing your amp harder. Featuring a simple single-knob design, it’s easy to dial in extra volume or drive. True bypass ensures your tone stays pure when off. Built tough with a rugged metal chassis, it’s a must-have for any pedalboard.