@Lugia - I thought I read somewhere where the Keystep Pro gates can be configured for 5V? I thought I recalled you have one?
-- jb61264

They're pretty flexible, yep. And I do use 5V trig/gates from time to time. But what I usually do is to set these to 8V so that they can trigger those AND most other modules. The only time this doesn't work nicely if when I DO need +5V for working with the AE...which is based around a +5V architecture for everything.