I've never heard of DTS:X costing extra. Plenty of units added it later with a firmware update, but to actually charge more for it? What brand Pre is this?Damn, they should give it to you for free. I have the same problem with my Pre-pro it came with Atmos and it is extra for DTSX, they don't even offer Auro. Dolby must have paid everyone off. Just doesn't seem fair.