As far as I can tell (I never played the original) the Robotalk began life as a Maestro FSH-1 clone. I believe the Subdecay Prometheus is similar in that regard, though it appears it is getting more tweaking.
If you want to try a Robotalk Bass you'll probably have to find it used. I only found one place (Pedalgeek.com) that even had one new one left. There is a new version coming out, but it will not have the Sample & Hold Filter (what Xotic calls "Random Arpeggiator) included anymore.
Lame, another pedal I want to try goes into "hard to find" status.
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