A simple waveshaping distortion with a wet/dry mix. It adds harmonics to whatever you send it, from a clean boost to a nearly square-wave collapse.
The idea
Drive pushes the signal into a smooth clipping curve and blends the result with the untouched signal. Because the clean path runs alongside the driven one, you can melt the body of a sound while keeping its attack intact: the classic parallel-distortion trick. It is a curve, not a model of any particular pedal or circuit.



