A versatile Univox Square Wave based circuit that ranges from crunchy overdrive to boneshaking heavy fuzz. In moon mode, the dark control allows you to adjust the low mid level and add some rumble to your signal. Sun mode activates a high boost circuit that works in parallel with the dark channel, allowing you combine both sides of the tone control for extra volume and tweakability. In the light mode, the dark knob becomes a "body" control allowing you to thin out your signal for icy shredding or crusty punk riffs.