With a two year old 950 (purchased new in late 2002), you would want to confirm that it was purchased after 12/17/2002 - the date when all new 950's incorporated the "blue dot" revision to the analog signal path. If it was shipped to the original owner prior to that, they had the option to get the blue dot revisions free (either by sending their unit in for modification or swapping it for a modified unit), in which case there would be a blue "dot" sticker next to the serial number.

In April 2003, Outlaw released a software fix for a bug in the DTS-ES software. MeanGene's link will take you to the page where the fix can be requested, but first I'd find out if the unit you are looking at has received the fix.