I assume you mean with the CV in on the HSD.
If so you have the two CV ins, but you then can use them completely flexibly through the mod-matrix. See the mod-matrix section towards the end of the on-line manual to see all the destinations that you can modify with those inputs.
I don’t think you’ll be able to make it exactly like all the features with the HSK’s built in ribbon, but you could do similar things. (I’d have to think about it some.) You should also look at the other functions on the Zorx, like the pressure button — i wish the pressure sensor was on the ribbon.
I’d wonder if it makes sense from cost consideration. The Zorx is only $100 less than the difference in cost between the HSD and the HSK.
Thanks for this idea; i was not aware of the Zorx Ribbon Controller before.
ADDED: The HSK ribbon controller has three modes —pitch bend, mod-matrix source, and theremin. The first two I think you should be able to do without much issue. Having it work like the theremin I think is going to be a problem. The theremin reserves a voice all for itself, so you have 7 voices left for the rest if you are in polyphonic mode. I’m not seeing how you can do this — anyone else want offer ideas on how to do this ?