ProCo FAT RAT Distortion Pedal

The ProCo FAT RAT is a distortion pedal designed for electric guitar signal processing in live and studio environments. It enables adjustable distortion control for guitar players, supporting rhythm, lead, and boosted signal workflows. This makes it ideal for amplified guitar setups where tonal flexibility and low-end response are critical.

This pedal uses an analog distortion circuit with selectable clipping behavior to alter signal response. The control layout allows interaction between distortion amount, filtering behavior, and output level, with additional switching to change clipping style. It integrates into standard guitar rigs using quarter inch audio connections.

In real-world use, the FAT RAT supports consistent performance across rehearsals, recording sessions, and live stages. It is suited for players who need distortion tones that range from tight drive to heavier saturation while maintaining control over low-frequency response. The enclosure is designed for repeated foot operation in performance environments.

Key Features

• Analog Distortion Circuit: Processes guitar signals using an analog design
• Selectable Clipping Styles: Allows switching between silicon and MOSFET clipping behavior
• Three Knob Control Layout: Provides distortion, filter, and volume adjustment
• True Bypass Switching: Allows the signal to pass unaffected when the pedal is disengaged
• Metal Pedal Enclosure: Built for repeated use in live performance environments

Technical Specifications

Pedal Type
Distortion

Analog Digital
Analog

Controls
Knobs: Distortion, Filter, Volume; Switches: Fat, Clipping Style

Number of Footswitch Buttons
1

Inputs
1 x 1/4"

Outputs
1 x 1/4"

True Bypass
Yes

Power Source
9-18V DC power supply (sold separately)

Batteries
1 x 9V