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The M133 Micro Amp is an effect pedal from MXR that adds up to +26 dB of gain with just a single control. It can be used with electric guitar, bass or keyboards in applications for live performance, recording, and more.
The M133 Micro Amp is suitable for boosting your instrument's signal for lead work, or to adjust the level when switching between instruments with unmatched output, or anytime a signal drop-off is a problem. Featured with a 1/4" input and a 1/4" output, the pedal incorporates a single gain control knob to increase output. There is a footswitch for toggling the effect on and off bypass, and is built with a red LED that illuminates when the effect is on.
The pedal is powered by a single 9V battery or a 9 VDC adapter such as the Dunlop ECB003/ECB003E or a power supply such as the DC Brick (sold separately).