The ProCo Juggernaut Bass Rat is a bass-oriented distortion pedal from ProCo, the maker behind the long-running Rat family. RockBoard's PedalPedia describes its range as going "From a buzz-saw Fuzz to Full Valve type Distortion", covering distortion, fuzz and overdrive territory in one box, and it is built as an analog circuit for bass players1. It belongs to the wider world of distortion pedals, alongside fuzz and overdrive.
What it does
The Juggernaut Bass Rat is a single pedal that spans a wide gain range. At the low end of its travel RockBoard's PedalPedia describes a buzz-saw style fuzz character, and at the top end a fuller distortion it likens to the sound of valves being pushed hard1. That makes it a one-stop gain stage for a bass rig: a player can set it as a gritty overdrive for light grit, or push it into full distortion for heavier material.
Power and status
The pedal runs on a 9V DC supply with a center negative plug, the standard arrangement for most pedalboard power supplies1.
The Juggernaut Bass Rat is discontinued. It is listed as a vintage Bass Rat, so it will not appear in current dealer stock and is a secondhand find1.
Where it sits in the Rat family
The Juggernaut Bass Rat is ProCo's bass-specific take on the Rat distortion design, voiced for bass rather than guitar. RockBoard's PedalPedia describes it as covering everything "From a buzz-saw Fuzz to Full Valve type Distortion," and it is an analog circuit1. The pedal is discontinued, so used units are the only route for players who want one1.
Videos
JazzBassEU
bassfuzzcom
Bassklasse
Sources (1)
- Juggernaut Bass Rat by ProCo, RockBoard PedalPedia, 2026
