From Dunlop:

The most sought after and corpulent Way Huge pedal is back! The Swollen Pickle Jumbo Fuzz MkII surrenders super high-gain fuzz with copious amounts of smooth low-end to all who dare plug into it. With a twist of the Sustain control, you're taken from mild crunch to Armageddon! The Filter control retains its trademark insane range of heavily band-pass-filtered tones, distinguished by remarkable girth and sizzle, and the Loudness puts out enough volume to clobber any amp! Newly added features include a tone stack Scoop control that elicits classic Swollen Pickle mid-scoop or a flat mid-frequency sweep and a Crunch knob to adjust the compression intensity of the fuzz. Finally, under the hood, the MkII has two internal mini controls; Voice sets the intensity of the external scoop control from light to heavy mid cut, and Clip varies between two sets of clipping diodes for smooth or opened fuzz sustain.