Based on Pro Co RAT
The origins of the Pro Co “The RAT” can be traced back to the mid-1970s, when Pro Co engineers Scott Burnham and Steve Kiraly repaired and hot-rodded existing distortion pedals, such as the Dallas Arbiter Fuzz Face. Burnham decided he could build a superior product from the ground up, and designed “The RAT” pedal.
In 1978, “The RAT” was being built as a custom-order product. Only twelve of these pedals (including one prototype), commonly referred to as the “Bud Box” RAT, were produced. Each pedal was built in a standard project box, hand painted, and hand drilled. By 1979, as the pedal became more popular, Pro Co began mass-producing them. This iteration was built in a custom designed, rectangular sheet-metal enclosure, with an L shaped removable top/back section giving access to the internals. The top panel was labeled with Pro Co Sound “The RAT” and the three control knobs as Distortion, Tone and Volume.
In 1983, Pro Co switched to a smaller, U-shaped enclosure. Finally, in 1988, the RAT2 was introduced, which included an on/off LED. Various RAT2 circuit board layouts and wiring configurations have surfaced in the last few years, including the noted “RAT3 version A and B” all under the RAT2 moniker. The RAT2 model is still available today, but in 2008 production moved to China and is now manufactured by Neutrik for Pro Co Sound.
Notable users include Kurt Cobain, Krist Novaselic, Jeff Beck, Joe Walsh, and Joe Perry.