Although I'm not 100% certain, I believe that all of the audio outputs are now active all the time, including HDMI. Can't remember whether this happened with the last firmware update, or before that. It used to be that if you chose DD, then HDMI didn't work and vice versa, but I believe that they all work now.
This can come in handy even with 1 AVR where you can use two inputs and have different surround sound settings on each input - one for the usual TV and another for music (audio only). Usually changing inputs is easier than audio formats since the AVR remembers the mode for each input.
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