That is wacky, fragile, and delightful. But I’d be surprised if it was still useful. Amazingly cool though.
Here’s a fresh Best of CGS Serge jam session through my newly-installed Klangbau Köln Spring Reverb, which I got specifically for the 4U modular:
I also recently recorded a VLOG about my experiences with the CGS Serge as a relative newbie:
In the first (pinned) YouTube comment, fonitronik (Matthias?) kindly wrote a few more details and clarifications on the topic
Edit: and another experimental Serge jam