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.

Ok, didn't know about this, thx.
Skimmed over, but seems to remain unsolved by make noise.

I like your setup and especially that you want to be able to work without external computer.
Have you thought about Bitbox or anything similar? It's of course not as direct as the DAW-link via ES-9, but works in some ways also without DAW.