Originally Posted by LoneSwan
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It would be very helpful if you could make another test with your RX-V457 AVR. Please verify that the AVR is not post-processing the optical input from stereo to multi-channel, and is in fact getting 5.1 DD delivered from the Fire TV with the appropriate system settings (as you detailed).
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If the optical out from your Fire to old receiver is DD 5.1, I'm still bewildered, because this is not what I'm seeing from my setups, with the exception of my Pioneer VSX-519V direct to Fire TV optical (system set = choice #4
, DD over Optical).
Again, I am questioning that the Fire TV is capable of converting DD+ to DD, but will deliver this (as passthrough) under certain configurations.
Thanks again for your thoughtful response!
I keep the RX-V457 input that's associated with the optical input set to Surround Enhanced, DTS Neo:6 Music (the sound of which I prefer to Dolby ProLogic).
When the RX-V457 is getting stereo on that input, its diaplay says "Neo:6 Music."
However, when it's getting DD 5.1, the RX-V457's display automatically changes to say "Dolby Digital" and displays a grid of speaker icons in the front left, center, front right, left and right surrounds, and a sixth icon for the subwoofer.
When the program coming in is stereo, the display reverts to saying Neo:6 Music.
I don't think there's any ambiguity there about what's going on.
Incidentally, this is the second FireTV that I've had - I returned the first one in frustration over getting the 1080p icon to display. This one behaves exactly the same in all respects - I solved the 1080p problem by relocating my cablemodem from by my PC upstairs to the room with the Fire and using my MOCA link (over coax) between the two locations to instead provide internet to my PC upstairs, since top speed is less necessary to the PC than the Fire.