Earthquaker Rainbow Machine - UsedThere's no better example of "the journey is more important than the destination" in pedal form than the Rainbow Machine. Advertised as a "Polyphonic Pitch shifting Modulator", the Rainbow Machine is an unconventional pedal for the unconventional soundscape explorer after all, one of the knobs is labeled "magic". Offering pitch shifting up to a 3rd up and a 4th down, and an expression out for further control, there's a lot of sonic territory for you