Tremolo and vibrato are controlled by several switches and two knobs in the effects section. Tremolo modulates the amplitude or volume of the sound, and Vibrato modulates the pitch of the sound.
On/Off switch: Turn the tremolo or vibrato effect on or off.
Trem/Vib switch: Choose either tremolo or vibrato.
Depth knob: Set the intensity of the modulation for either tremolo or vibrato.
Speed knob: Set the speed of the modulation in hertz. Lower settings produce a smooth, floating sound. Higher settings produce a rotor-like effect.
Sync/Free switch: Choose Sync to synchronize the modulation speed with the host tempo. Choose free to set values with the Speed knob. In Free mode, you can use the Speed knob to set the modulation speed to different bar, beat, and musical note values (1/8, 1/16, and so on, including triplet and dotted-note values).