the rails are the heat sink for the uZeus...

personally I would try to find a single psu that can power all the modules and preferably with a proper bus board

befaco excalibus will power the whole thing and no rack wart - so a bit of extra space for utility modules

"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia

Utility modules are the dull polish that makes the shiny modules actually shine!!!

sound sources < sound modifiers < modulation sources < utilities