Wow, that's a mighty fine looking interface. Waaaaay out of my budget range. Doesn't look like it has co-ax SPDIF either, which I need for the dry outs on my POD HD pro. My Quad used to be constant problems with Sonar X series, but since SPLAT, it's been pretty darn stable, except when I tried that synth.

I use AAS synths including UA w quad capture as synth track or `old school` method. I did upgrade to full version of all of them around same time I went X3 to SPLAT. Don`t recall ever having a prob w any of them.

AAS just released an update for Ultra Analog VA-2.  It is now version v2.1.1.

Maybe this will fix these issues. 

Note: I also received a email regarding Strum GS-2 and Lounge Lizard EP-4 so owners of other AAS products might like to check theirs for updates as well.