GK’s first foot pedal! Circuitry from the 2001RB high gain channel provides the foundation upon which this pedal is based. It is the only distortion/sustain pedal created specifically for bass, the only one designed and manufactured by a bass amp company. It features input Gain, Bass, Mid, Treble, and output Level controls. It has a rugged aluminum casing, and is powered by a 9V battery (included) or 9V wall supply (not included). It will give any bass a great sustain sound, and one approaching that of the ultimate 2001RB when used with other GK heads. These sounds are being used more and more by bassists. The Gallien-Krueger DieselDawg offers them an affordable way to add high-quality distortion and sustain to any rig.