A simple, straightforward controls make the Slo easy to dial in. Dark, Rise, and Dream are your three reverb algorithms/types, and are aptly named. You also have the option of accessing 3 different wave shapes via the pedal's three-way switch and holding down the bypass switch: Sine, Warp, and Sink. And with Decay, Filter, Mix, X, and Depth knobs, you can easily contour each mode's sound.