The EHX Operation Overlord is a stereo-output overdrive and distortion pedal with a super broad range of sounds, usable on guitar, bass, and even keyboards! Normal mode on the pedal uses three JFET gain stages for tube-amp styled response and tone, with an onboard boost to overdrive your amp before the JFET stages. The three-position input switch lets you select the proper input level for your respective instrument. EHX 9.6VDC-200mA power supply included. The current draw is 90mA @ 9VDC.