Used MXR M133 Micro Amp Pre Effect Pedal

Boost your tone with this used MXR M133 Micro Amp, a compact preamp pedal in good condition. Featuring a single Gain knob, it provides up to +26dB of clean boost, making it perfect for solos or balancing output between guitars. Its simple analog circuitry ensures transparent sound, while the sturdy metal housing delivers road-ready durability. Ideal for pushing amps or enhancing pedal chains, this classic pedal is powered by a 9V battery or AC adapter.