The NoiseKICK FX FVB-1 FUZZ vs. BOOST is a dual pedal. The right side contains an awesome FUZZ circuit modeled after the famed CW Muff. The left side contains a powerful BOOST circuit modeled after the Z.Vex Super Hard-On. Both can be used individually or they can be combined. Finally, the FVB-1 contains a toggle switch that lets you SWITCH THE ORDER OF THE CIRCUITS for even MORE sonic possibilities. The versatility abounds.