The Nocto Loco is another pedal designed by Dan Green of 4ms Pedals that is awesome on a variety of different sources. What is does is take the incoming signal and create a square wave of the same pitch, then drop it down by a selectable one, two or even three octaves. There is also a switch to feed back in the original signal. The second half of the unit is a "pulse" or LFO that can affect the signal at varying speeds and depth. It doesn't stop there- once the "Loco" switch is triggered, the whole pedal goes into loco mode, fuzzing everything out and making it very wild and unpredictable. Take a listen to the Nocto Loco here.