> i would nevertheless be interested to hear from anyone who knows a
> midi to cv interface that can allocate, say, four voices.

We are working on such an interface. Probably with 16 CV outputs and much
easier to use than the MCV24 (and much cheaper). The hardware is ready (was
used for the new robot control for KRAFTWERK) but I have no idea when it
will be available as a module. We still have to define the different modes
(only a few will be available, e.g. 8 x 1 voice monophonic with pitch and
velocity CV, 4 x 1 voice polyphonic with 4 CVs per voice and the same for
polyphonic modes). It will be not free programmable but offer only a few
often used modes.

I have no idea when it will be available as there are a lot of other things
to do before. We have to make one step after the other ...

Best wishes
Dieter