Describing the sound of distortion pedals is sorta like describing the taste of fine wine, i.e. an art entirely unto itself. That said, the Press Release for the new FuzzHugger(fx) AB-Synth reads like a post-modern take on the surrealist novella:

"It's a harmonic-blasting, liquidy, light-sabery, layered synth fuzz--with tone-shaping gain and texture knobs that take you from searing to splattery! From there, add a mind-altering second mode with wild oscillation, whale calls, blips, self-arpeggiation,more synth tones, and fat octave down!"

If you're seeking a more technical description of the AB-Synth, how 'bout this: the AB-Synth combines a dual-stage cascading fuzz gain circuit (copped from the Algal Bloom fuzz) with an oscillation mode and an octave down control. What this yields is a pedal that can do Jimi-style super-saturation to stable synth-like bass tones to utterly out-of-control pulsing white noise to everything in between.

Controls include Gain, Level and Texture (from "blistering" to "splattery"). A toggle switch engages "Oscialltion Mode" which adds the "Trip" control for oscillation frequency. Oscialltion Mode turns the insane fuzz into and insane synth fuzz pedal. Dig this video from FuzzHugger(fx) for some samples:

The FuzzHugger(fx) costs $125 direct from the manufacturer. Custom finishes are available.