The Bass Soul Food Transparent Overdrive Pedal from Electro-Harmonix provides a natural overdrive and clean boost to enhance the original sound of an instrument and amplifier, while retaining their essential character. Its gain stage, treble control, and signal path are optimized for bass guitar if you want extended low-frequency response. An adjustable clean blend assures an articulate, full tone while boosted power rails deliver extended headroom. Selectable true or buffered bypass modes and a switchable -10 dB pad for active instruments complete the package. The Bass Soul Food runs on a 9V battery, and comes with an EHX9.6DC-200 power supply.