Hi Sidney

> In fact I was looking for something similar to what Florian explained, working like a Korg Mono-Poly, because I could use the filters, VCA and ADSR modules from my system, just needing to add more oscillators in order to achieve a polyphonic system.

It is not only the VCOs. You also need at least four VC-Switches, which
are controlled by the individual Gates, and which switch the VCOs on and
of (you sometimes want to play one or two notes only with a four voice
synth ;-) ). How to create a Gate for the final VCF/VCA Envelopes is
another thing. If you want it not retriggering, it is easy to achieve
with an A186-1. But if you want retriggering you also need two A165.

Florian