Thick mids and lows, insanely long sustain, and crunchy saturated harmonics are right at the tip of your toes with the Big Joe B303 Metal guitar effects pedal. The Shaper knob lets you boost and scoop your tone’s presence and emphasize the middle or high and low frequencies. The Gain knob, meanwhile, enables you to control precisely how much distortion you want in your sound, whether it’s s subtle guttural growl or a primordial roar. The Big Joe B-303 Metal pedal features true bypass switching.