So people trolling get replies instantly yet people with genuine questions don't? such a helpful board.
Don't be that guy...
I have spent a lot of time on the 360 boards and have/will be on the Xbox One boards for topics specifically about technical setups and problems, especially audio and networking. Kind of a rude thing to say that the board isn't helpful. --- Death to Videodrome, Long Live the New Flesh
HDMI supports 7.1 Dolby TrueHD/DTS HD (HD lossless audio)
Any High speed HDMI cable supports Dolby True HD/DTS HD with 3d. (Atm xbone/ps4 do not support 3d playback and ps3 3d only supports 2 channel audio.)
For 7.1 Console -> Old receiver -> TV all via hdmi. Using the console to decode your receiver will show L/PCM.
Console -> New receiver -> TV all via hdmi. Your receiver does the decoding and the DtHD/DTSHD indicators will light up. The result is the same as above, HD lossless audio.
7.1 with 3d gets tricky. Assuming X1/ps4 gets 3d play back with 7.1 or you have a dedicated 3d Blu-ray player.
You'll need are receiver that can pass through 3d or a TV and receiver that both have ARC (audio return channel) ARC is an hdmi feature that allows back and forth audio signals between devices.
3d player -> 3d receiver -> 3d tv 3d player -> 3d TV with ARC -> receiver with ARC.
This is all good info - I will just say though; most high end BluRay players nowadays have dual HDMI outputs, to get around older receivers that don't support 3D passthrough. --- My games room: http://imgur.com/a/CA2yz XBL: Mister Bump PSN: Mr_BumpNZ