The GS3 sports three switches, one for each channel and a master On/Off. This last switch is a great idea as it allows you to choose whether you want Channel 1, 2, or both before you engage the distorted sound, as well as letting you quickly clean up your signal with one stomp of your foot—even if bothchannels are engaged. Channel 1 offers Volume and Gain knobs on top of the pedal, as well as a treble roll-off on the side. Channel 2 features Volume, Tone and Gain controls, all on the top face of the unit. An easy-access battery compartment adorns the right side.