Pro Co Fat Rat Distortion FX Pedal - Pedal Jungle
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Pro Co Fat Rat Distortion FX Pedal

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*This is a Special Order item that we order quickly and directly from our suppliers after your purchase and ship to you within 4-15 days.*The...

*This is a Special Order item that we order quickly and directly from our suppliers after your purchase and ship to you within 4-15 days.*

The FAT RAT from ProCo is the switchable version of the RAT line that includes the classic RAT silicon clipping but also a totally different Mosfet/Germanium clipping section.

The addition of the mosfet/germanium section gives the Rat more of an amp-like and natural feel, with subtle scoop and smoothing in the upper mids, plus it has further EQ settings such as the 'fat switch' for much more tone shaping and making it more suitable for bass and overdrive use.

The Details
  • Special Order Item
  • Expected to ship within 2-5 days
  • Effect: Distortion
  • Made In The USA
  • Legendary RAT filter control
  • Silicon or mosfet/germanium switchable clipping
  • Solder-free mod option to swap chips
  • Fat switch for bass
  • 100% analog signal path
  • Heavy-duty, industrial footswitches, knobs, and jacks
  • On/Off LED indicator
  • Military-spec glass-epoxy circuit board
  • 2.1mm standard barrel jack (9 or 18V operation)
  • “No tools required” battery compartment (battery not included)
  • Five year limited manufacturer warranty
What Do ProCo Say?

The FATRAT is the newest member of the RAT family. Using the highly acclaimed '85 Whiteface Reissue RAT as our platform, we added a bass enhancement circuit, a brand new switchable clipping section, and a whole lot more.


Clipping Section:  Switchable between silicon clipping, as in the classic RAT, and a mosfet/germanium clipping section, which is entirely new to the RAT line.  The mosfet clipping section gives you subtle scoop and smoothing in the upper mids throughout the entire gain range of the pedal, and makes the pedal sound more amp-like and natural.

Socketed Opamp:  The pedal will ship with the current stock chip (OP07DP).  However, changing over to the mythical LM308, or other compatible chips will be a quick and simple mod that you can do solder-free.

Large, CTS Pots:  They give you a smooth, even sweep throughout the range of the Distortion, Filter, and Volume controls, allowing you easy access to the myriad of sweet spots in the tone machine.

Fat Switch: Provides a significant bass boost and simultaneous high cut – this makes the pedal more suitable for bass guitar, lower tunings, as well as fattening up and smoothing low gain settings, making this a good candidate for overdrive use.

Shipping & Returns


  • Free UK RM48 shipping from orders of £100 or more
  • Orders despatched within 1-2 working days
  • Always tracked worldwide shipping
  • Plastic free packaging as standard


30 day peace of mind return policy, but please read our terms and conditions, returns and refunds policy before placing an order. 

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