Primal Scream Distortion
Guitar distortion effect simulating the analog circuit of a classic distortion stomp-box using a filtered dual-diode and separate tone stage. Because this appears to be the most popular of the three distortion units in GeoShred, and relatively expensive computationally, it offers oversampling in the Expert menu.
Amount of distortion - performable
Amplitude control, performable, convenient for adjust signal loudness as desired after changing the amount of drive
Tone control varying from dark to bright - performable
Expert / Oversampling
In the Expert menu, one can select oversampling factors of 1 (no oversampling), 2, 4, and 8