This Robotalk is a funky tool. I can however make the same kind of sounds with my Emma Discumbolator, which is one of the best envelopefilters I tried. The Boss Phaseshifter 3 can do some of this arpeggio-stuff too in the rise/fall-mode. But, this Robotalk sounds extremely good and clear. Gotta think which pedal I'm gonna throw out of my case..