Hi John

> Btw, does it have anything special about it maybe a doepfer clone
> module

No, but some good tricks to remember for patching modules:

The VCO produces sine, square and saw. Square and saw are sent to the
filters and the sine is sent directly to the signal path after the VCFs
(separate Hipass and Lopass). It sounds quite nice to have the sine plus
the the highpass filtered saw.

Also: when you were playing a CS-80 for some time, you learn much about
the worth of velocity and voice related aftertouch in analogue synthesis.

Florian