Karma's Greg Droman has done it again, with the bass guitar version of the popular Karma MTN-10 guitar pedal. This pedal is an Ibanez Mostortion clone... tweaked to perfection, for your bass... Same great circuit as Karma's MTN-10, with 8 tweaks to make it bass-friendly Very amp-like, OD/Distortion Premium quality plated through pcb Meticulously assembled in the U.S. All parts sourced in the U.S. when possible True bypass switching CA3260 IC chip, as in the original Mostortion High quality parts throughout Custom powder coated and silk screened enclosure Flexible 3-knob EQ for wide ranging tone control Plenty of gain to push the front end of your bass amp Great touch sensitivity, highly dynamic CONTROLS:Drive - from subtle overdrive, to gnarly grungeVol - Makes it all louder... a good thing!B - Turns the bass up or downM - Turns the mids up or downT - Turns the treble up or down(The B, M, T controls are what really makes this pedal special. Use these to compensate for dark or bright bass guitars or amps.) POWER SUPPLY (sold separately):This pedal requires a 9 volt DC, 2.1mm center-negative power supply (the Boss standard, just like most guitar pedals use). Current draw is a mere 11ma. This pedal does not use batteries.