Featuring JFET tube amp simulation, redesigned tone controls and a switch for toggling between the onboard diodes and a more overdrive-oriented mode, the Keeley Son of Fuzz Head is a dual-mode monster built on the shoulders of a giant. Retaining the bite and attack of the original Fuzz Head while building on ten years of experience since its predecessor's introduction, this new and improved pedal spans the gamut of fuzz/distortion/overdrive tones for a three-in-one package deal.