Pro Co Sound is an American manufacturer best known for creating one of the most influential guitar distortion pedals ever made - the legendary RAT Distortion. Designed by company founder Scott Burnham and introduced in 1978, the RAT quickly became a benchmark for analogue distortion and remains one of the most recognisable pedals in guitar history.

Originally developed as a versatile distortion pedal, the RAT delivers everything from mild overdrive to aggressive high-gain tones, making it suitable for blues, classic rock, punk, grunge, hard rock and metal. Its straightforward control layout - Distortion, Filter and Volume - allows players to shape their sound quickly and intuitively.

At the heart of the RAT is its distinctive analogue clipping circuit, which produces smooth saturation, rich harmonics and exceptional note definition even at high gain levels. This unique character has made the RAT a favourite among professional guitarists, recording engineers and touring musicians for more than four decades.

Alongside the iconic RAT pedal, Pro Co continues to develop professional audio products built around durability, reliability and outstanding sound quality. The RAT remains one of the world's most celebrated analogue distortion pedals, trusted by generations of musicians seeking authentic, expressive guitar tone.