You need an AES3, commonly known as an AES/EBU cable. It is 110 Ohms vs 75 Ohms. I would also double check the pinout on your processor and DAC, as sometimes these aren't consistent.
Digital XLR Cables
Hello my question is: I'm hooking up a digital processor to a DAC. the DIP has 1 XLR out to the DAC. Can I use any XLR cable or does it have to be special in some way??? I have a pair of Nordost XLR's and a couple lesser choices.