Description

Boost your tone with this used MXR M133 Micro Amp preamp/boost pedal in great condition. Delivering up to +26dB of clean gain, it’s ideal for pushing an amp into natural breakup, lifting solos, or restoring signal lost through long cable runs and large pedalboards. Simple single-knob Gain control keeps dialing in volume and punch fast and intuitive. Rugged MXR stompbox build, true bypass switching, standard 1/4" in/out, powered by 9V battery or optional 9V DC adapter.

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