The Mooer Varimolo is a digital 3 mode tremolo pedal. You have the first mode, classic undulating smooth clipping tremolo with shape, rate, and depth controls. Second mode is a tremolo with a wah type filter effect to cut through the mix. (Tremolo effect is notorious for being hard to hear in a full band setting) Third mode is a rhythmic galloping timed tremolo that sounds like horses galloping. So you got the classic and new twists on old sounds. What's not to like?