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nickr
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What are you connecting to? Your TV is most unlikely to support DTS-MA.
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It's all connected as before - except, The TV is now using the Audio Return Channel (Before the sound was using an optical cable - and no issues with DTS-HD MA)
The NUC is connected to the Receiver, and from the receiver to TV......
I really cant see what the issue should be! Everything is the same, except for a new TV and Windows 8.1!
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nickr
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A toslink cable will not carry DTS-HD
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Just briefly tried to disable arc. I noticed that in the sound device manager in windows, supported formats only shows dts and dolby digital.... I think its a driver issue for windows 8.1.....
i recall installing something in windows 7, or the dts hd master wasn't display in the sound device manager
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jjd-uk
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That would probably be the Intel Management Engine driver that I referenced earlier as that controls PAP for HD audio.