In Version 2, the Rainbow Machine has been completely re-imagined from the pixie dust-covered ground up to be more versatile, twice as loud as the original, with an extended delay time, deeper chorus tones, silent flexiswitch footswitches on both the Activate and Magic functions! EarthQuaker Devices designed this pedal with sounds you simply can t get anywhere else, going from dark vintage to outright whacky sparkle! The Pitch control adjusts the frequency of the polyphonic pitch-warped harmony from a fourth below your input, to a third above, and every atonal pitch in-between. Noon is the unison position. Use the Primary function control to adjust the volume of the polyphonic harmony.You may add in an accompanying octave or thicken the modulation by bringing up the Secondary function control. The Tracking control adjusts the lag time between the wet and dry signals, and the Tone control rolls off some treble for a darker, vintage sound. Clockwise is bright, counterclockwise is dark.