The TWIN TREM features two distinct tremolo effects: a Harmonic Trem on the right side (RED) and an Optical Trem on the left side (BLUE), each equipped with independent Speed, Depth, and Volume controls. These tremolos can be used separately as stand-alone effects or combined (MAGENTA) to create rich, unique, and percussive sounds. Both sides also include LED indicators that visually display their speed, making it easy to sync the two tremolos together.