Z. Vex introduced 4 new pedals at NAMM. All of these are improvement and/or modification builds on existing models. The Fat Fuzz Factory is essentially one of Z. Vex's famous Fuzz Factories with an added Sub Switch. The Sub switch allows the pedal to extend its low end to accommodate for lower registry instruments like bass and synth. The field reports say that it still sounds great on guitar.... Click on the title for more