Maxon SM-9 Pro+ Super Metal distortion pedal creates a multitude of high-gain guitar tones, from the classic "scooped midrange" made famous by thrash pioneers of the 1980s to monstrous low end for the drop-tuned sounds of modern metal. 

The Maxon SM-9 Pro+ pedal features Gain, Level, Scoop and Edge controls. Gain simultaneously boosts the 1kHz midrange band by up to 20dB as gain is increased. Scoop is a mid-band elimination filter that is variable between 200Hz to 2kHz. Edge is a hi-cut shelving filter that cuts high frequencies from 2kHz to 15kHz. 

The Maxon SM-9 Pro+ effect pedal can be switched between 9V or 18V operation thanks to an internal voltage-doubling circuit. The 18V operation is stabilized, providing improved frequency response and less compression than the 9V operation. 

Since their original introduction in the early 1980s, Maxon Nine Series designs have become a must-have pedal for effects connoisseurs around the globe. These Maxon pedals feature improved circuitry and true bypass switching.

Features:

Blue LED
Bypass switch
Gain control
Scoop control
Level control
Edge control
Easy-access, no tools battery compartment
Die-cast zinc chassis
Rubber bottom pad prevents accidental movement
AC/DC power operation (9V battery or 9V power adapter)
LED status/battery life indicator
Mechanical true bypass switching using 4PDT switch