you mentioned a "hiss problem", when working with ES-9 and Morphagene or Mimeophon... what exactly is the problem there? Do you know, where it is coming from?
It's actually not related to the ES-9. The hiss problem has been discussed at length on Mod Wiggler, for example in the main Mimeophon thread. I'm not sure if the cause of the hiss has been identified.
You can hear the hiss at 00:54 here (not my video):
I have tried the modules in both an Erica Synths 6U Monster Case and a 4MS 40X Pod, and the problem has been present in both configurations. I will soon try with a Meanwell 120W PSU and Konstant Lab HammerPWR with a filtered bus board. I'm in Europe.