Hi Guido

> very usefull indeed, but I would build this outside
> of the rack.

I think, it would become very inconvenient. Imagine a very simple audio
chain with VCO-VCF-VCA-VCBBD. This would require three external
crossfaders with at least nine cables to the system. Not to speak, that
there is no additional mixerinput wired.

It might make sense to use VCAs for the crossfader, and external faders,
which deliver CV. But this would require active electronics in the
module. Up to now, this is a completeley passive module which should be
very cheap.

Florian

Something like a DJ-mixer in front of your rack.

> And then three or four little mixers with crossfader, and don't forget
> the inverters ( with a switch )
>
> You can build this yourself, and maybe you need some buffer amps or
> adders, I don't
> know, I'm not an electronic.
>
> good luck