ProCo Sound FATRAT FAT RAT Distortion Pedal With Clipping Options
ProCo Sound FATRAT FAT RAT Distortion Pedal With Clipping Options
SoundPro Item: 79523 | Part Number: FATRAT
Usually ships in 5-7 business days
- Switchable Silicon And MOSFET/Germanium Clipping For Versatile Distortion Character
- Socketed Op-Amp Accepts LM308 And Compatible Chips Without Soldering
- Fat Switch Adds Bass Boost And High Cut For Bass Guitar And Low-Tuning Use
- Large CTS Potentiometers Deliver Smooth, Consistent Sweeps Across All Controls
- Extended Voltage Range Reduces Compression And Sag At Higher Headroom Settings
The ProCo Sound FATRAT is built for guitarists and bassists who need more tonal range than a standard RAT provides. The dual clipping architecture — switchable between silicon and MOSFET/germanium — gives players access to the original's aggressive character alongside a smoother, more compressed voicing that sits more naturally in a dense live or studio mix. The socketed op-amp design means chip swapping is a tool-free modification, making it a practical platform for engineers who want to experiment with LM308 or other compatible chips without committing to a solder job.
The Fat Switch addresses a longstanding limitation of RAT-style pedals by adding a simultaneous bass boost and high-frequency cut, opening the circuit up for bass guitar applications, drop-tuned instruments, and lower-gain overdrive use where thinner distortion pedals fall short. Large CTS potentiometers across the Distortion, Filter, and Volume controls deliver consistent, predictable sweeps across the full range — critical when dialing in sounds quickly during soundcheck or session work.
Extended 9V to 18V operation gives players real headroom flexibility. Running at 18V reduces signal compression and sag compared to lower-voltage RAT variants, a meaningful difference in high-gain or clean-headroom applications. This makes the FATRAT a strong choice for players who route directly into a console or recording interface as well as those running traditional amp rigs.
Specifications
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