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

lipping 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.