The Yellow Spiral Drive has a wide variety of uses: “Always on” tone sweetener, clean boost, dirty boost, low-gain distortion, mid-gain distortion, amp input punisher, and “unleashing the fury, everything on 10” lead shred-o-rama. Select changes to the basic circuit also make the Yellow Spiral sound fantastic on bass with none of the low-end loss commonly associated with this circuit. The Girth control, as well as selectable clipping sections including high headroom LED's, adds a useful and modern spin to this classic circuit.