Hi Ingo

> well, to be honest, i don't think that this application
> sacrifices another module.

To be honest, I could imagine this.

I am planning since a long time a crossfader module, which I need
urgently for life shows. If you change a patch life, you can not unplug
filter X and plug in Filter Y. You have to have several crossfaders (and
multiples) to change the modules life. Though my plans went more to a
non voltage controlled crossfader with an inverse stereo potentiometer,
I could imagine also a CV-sourceswapper as universal approach.

One input, two outs -> Panner
Two inputs, one out -> X-Fader
Two inputs, two outs -> Source swapper

Why not

Perhaps also existing Panners could be upgraded by addon boards.

Florian