Yes, it will pass all 6-channels. You have to select the 4.0 or 6.0 mix on the Chesky disc if it offers it.

The 861 has an option called 2+2+2 and from here you can tell it off or 5.1. Off turns off the center and sub. I assume that the 568 has a similar option for those discs, but I don't know for sure.

Stacey Spears
Co-Creator, Spears & Munsil High Definition Benchmark, Blu-ray Edition and Lighthouses of the Pacific Northwest.