Hi Anthony

> If you just want typical polyphonic synth sounds (juno/ jupiter) I think an easier/ cheaper way to get this would be to use an inexpensive poly such as the MKS-20 or the Korg Poly 800 for the polyphonic sound source and then process the sound with the doepfer system.

Right answer, but wrong technical name: MKS-20 is Rolands piano-expander
from that time, MKS-30 (vulgo JX3P) is assumingly what you thought about.

Btw: used market prices of the MKS-30 are awfully expensive at the
moment (350 Euros and more!). Poly800 is ok as polyphonc oscillator source.

Florian