The ProCo Fat Rat retains more EQ integrity than other Rats by having a "fat" switch that boosts bass frequencies while acting as a high cut. It makes it smoother, with a thicker tone, and suitable for lower tunings or bass players. Additionally, the switchable tone circuit lets you stick to the standard Rat silicon clipping or play through a Mosfet clipping section, which scoops and smooths out the midrange. The result is a more adaptable Rat for a different range of playing styles.

Tested and ready to go! No accessories included unless otherwise noted.

Every instrument we sell has been professionally checked over and setup by our in-house technician to ensure optimal playability. We pack each order with care and ship promptly.

Mill River Music is a full-service shop in Western Massachusetts, proudly offering new, used, and vintage gear, plus repairs, and friendly advice. Reach out at (413) 505-0129 or with any questions!

International buyers are welcome — please message us for an accurate shipping quote before purchase.