An analog 'two-in-one" effect pedal!
It consists of a tremolo and a real vibrato, both with independent sets of speed and depth controls. The tremolo effect works like a change in volume; the vibrato works as a change in tone (pitch modulation) and is carefully designed to imitate the sound of a real tube vibrato. Features 2 switches: on/off and select. Has a built-in regulated power supply.