The Pearl P-2000B PowerShifter Eliminator bass pedal"s interchangeable cam system gives it 4 different actions and feels with just the push of a button. The PowerShifter bass pedal"s footboard moves forward or backward to change leverage feel to light, normal, or heavy. Other PowerShifter enhancements include the traction-control footboard, QuadBeater for 4 different sounds, steel-reinforced belt drive, adjustable angle footboard, Power-Plate side-mounted hoop clamp system, variable-height hoop clamp, and infinitely adjustable beater angle.Interchangeable cam system gives it four different actions and feels with just the push of a button PowerShifter features allows the footboard to move forward or backward to change leverage from light, normal, or heavy feel Traction-control footboard QuadBeater for 4 different sounds Steel reinforced belt drive Adjustable angle footboard Power-Plate side-mounted hoop clamp system Variable height hoop clamp Infinitely adjustable beater angle