Check the listing for details. Beetronics FX Swarm Fuzz Harmonizer Pedal - Rock Em Red, Sweetwater Exclusive. Condition: New. Listed at 249.00 USD. A Swarm of Fuzz, Harmony, and Modulation with a Sweet Look Beetronics FX manufactures some of the most boundary-pushing pedals around, so when the company describes the Swarm fuzz harmonizer as its “most insane bee yet,” it’s safe to assume that this one might not be your typical fuzz pedal! Sporting an exclusive, one-of-a-kind finish that’s only available at Sweetwater, the Swarm begins by transforming your guitar signal into a square wave, then it divides and multiplies the frequency to give you nine separate intervals to choose from on the Species knob. These intervals span two octaves, and the Queen and Drone controls allow you to mix the intervals both above and below your input note, resulting in some unique fuzz tones.