The Behringer PB100 Preamp Booster is a versatile effects pedal, designed to boost the volume and shape the sound of your instrument. It features adjustable Bass, Treble, and Gain controls for comprehensive tone shaping, with a footswitch to activate/deactivate the effect. This pedal can be powered by a 9V power supply or battery, similar to many other effects pedals such as the Nobels PRE-1.