Second Hand Voodoo Lab Sparkle Drive Voodoo Lab Sparkle Drive is an overdrive pedal featuring a unique “clean” control. Its overdrive circuit provides the same tone as a vintage ‘808. Then the clean control blends back in a boosted direct signal. This restores the attack and feel which is lost in a highly compressed overdrive circuit. The Sparkle Drive utilizes the same concept as layering two amps, one clean and the other saturated. Of course with the clean control turned down, you get a classic overdrive tone. All the way up, it provides a super transparent, 100% clean boost. And just like every Voodoo Lab pedal effect, the Sparkle Drive features true bypass switching, a heavy-duty metal switch and on/off status LED. CONTROLS GAIN – This sets the gain level for the overdrive sound only. It has no effect on the “clean” signal. Use low settings to warm up and compress your tone. Turn it up for additional sustain and saturation. TONE – Turn it up for a brighter sound, down for darker. It is for the overdrive only and has no effect on the “clean” signal. CLEAN – Blends the boosted clean signal with the overdrive. All the way down is overdrive only. All the way up is clean only. In between is a blend of both clean and overdrive. VOLUME – Sets the output level.