The Supa Tweak has one toggle switch for Sag. This tightens up the squish when hit hard.
Also, the bias and Gain have been separated so you can get a full gain sweep with solid
fixed bias (Same bias as when cranked). With the gain down you can also get a good amount
of Sag with the toggle on, and a Tone knob that brings in bass or mid range mid circuit similar
to the Marq Won.