Keeley's First Original Design Fuzz/Overdrive! Designed to work like Fuzz Face pedals that many players use as a LEAD BOOST. A Fuzz Face can be muddy, lacking note definition, too bassy, and lacking sustain. An overdrive can be not enough or too smooth. In contrast our design is transparent, has a better frequency response, and gives you that cutting edge for lead breaks. Features: • Fuzz and Level controls • NPN Germanium Transistor • 2 –Way Silicon/Germanium Toggle switch, this is like a gain Style switch. The "SI" mode inserts two diodes (one silicon and one germanium in parallel) in the distortion circuit so you can have a modern twist on a vintage sound, increases the gain and compression a bit for more sustain. This is more of an overdrive mode. • The "GE" mode is just raw and open sounding • Hand built • True Bypass Switching