The pedal allows you to get the effect of “rotating sound” and gives the sound of the instrument three-dimensionality and specific color. Using the SPEED and DEPTH knobs, you can select the desired frequency and modulation depth. The COLOR control adds color to the sound by emphasizing the resonant frequencies in the output signal. The 4/8 switch allows you to switch the number of phase-shifting chains that affect the color of the sound of the instrument. A true “TRUE BYPASS” is achieved by using an ALPHA footswitch. Compatible with YERASOV SCS Pedalboard.