Hi Dieter

> I still have problems to understand the audible difference in case of e.g.
> three VCOs.

Retriggering of the voices when beeing rotated (would not happen with
the 152).
Having different sound settings on each VCO, so the sound of one note
will alter with running through the "history". Or more complex: having
completely different sound processing.

Though I personally do not need such a module, I can imagine that there
are use cases.

Florian