I just read through the owner's manual, and didn't see any mention of a wet/dry concept. None of the settings seem to provide any way of separating the original signal from the processed signal, or no way of specifying the amount of pre-processed signal versus the post-processed signal.
Further, I did searches in Google, and also came up empty.
Perhaps you could contact their technical support folks at Antares, and see if they have some way of doing this that I missed. They seem to be reachable within 24 hours at:
http://www.antarestech.com/support/contact.php Bob Bone