Passing HDMI audio through the DVDO Edge was indeed the problem. With the Oppo BDP-93 connected directly to the Cary Cinema 11a, the sound is every bit as good as it is with the Sony XA5400ES. I hadn't realized jitter could be that debilitating to audio quality. Oppo assures me there will be no problem with HDMI-1 connected to the Edge and HDMI-2 connected directly to the 11a, so the XA5400ES will rejoin the Proceed PAV/PDSD and Amp 2 in the living room.
Kal's post was on the mark.
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Kal's post was on the mark.
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