I must have a different manual than you for the 5700.
On the "digital output selection" table, if I choose to out put with PCM with a disc that has DTS-HD, then the amp gets a 2 channel PCM signal.
And yet, according to the table, if the disc has PCM on it, and I choose PCM as the output selection, then the manual suggests up to a 7.1 signal will be output to the amp.
Frustrating. If the unit can't easily output DTS-HD, then I'm hoping I can somehow change it at the store. Problem is the packing has already been recycled...
Anyone else with some suggestions? Greg's had some good suggestions, and would value any and all input.