"Millie Fuzz is a 2-channel Fuzz Face (crunchy) & Big Muff (burn) hybrid," and I love all of her personalities. This pedal offers many tone variations—classic smooth fuzz, glitchy fuzz, all the way to aggressive, hard-clipping distortion. There's also two trim-pots inside to push its boundaries—one for the burn and the other affects both burn and fuzz! Love it!!!!