Boss JB-2 Angry DriverThe JB 2 Angry Driver features three dual concentric knobs that provide independent drive, tone, and level control for each overdrive type. Via a six position mode selector, you can use each overdrive independently, or combine them together in series and parallel configurations. With the ability to blend the Blues Drivers famously expressive low to mid gain tones with the Angry Charlies aggressive rock voice in any combination, the JB 2 Angry Driver