The Pro Co Rat is a popular guitar effects pedal known for its distortion capabilities. Originally released in the 1970s, it has become a staple among musicians, particularly in rock and metal genres. The pedal is recognized for its ability to produce a rich, warm distortion that enhances the sound of electric guitars. Designed for both live performances and studio recordings, the Pro Co Rat features simple controls for adjusting distortion, filter, and volume. Its compact size and durable construction make it a reliable choice for guitarists. Many notable artists, including Kurt Cobain and John Frusciante, have used the Pro Co Rat in their music.