I will let you know how the Audya 4 works with the XS. I just ordered the A4 from Frankivie and I have a Motif XS 6 that I will use to trigger the A4.
Lee, I'm curious as to why you can't use the control surfaces of the XS to control the A4. You can use the XS to control a DAW?
leezone - did you ever get my email?