The ADA8000 has analog XLR outputs for converting digital signals to analog signals. The best way to accomplish this would be to use XLR to 1/4" TRS cables. They come single, or as a 'snake' bundle of multiple cables. You would then connect to the 1/4" LINE IN jacks on your mixer.
Keywords: ADA8000, ADA8200, XLR, Quarter Inch, ADA, Audio Interface, Audio, Interface, Interfaces, Mixer, Mixers