Originally Posted by stefpoit
I'm going to replace my 1080p toshiba, probably with a vizio p55. My receiver is currently a sony str-dh550. Suits me fine. So I would just need to route all my video into the TV first to get HDR, and then use audio return channel on the receiver? If I can get by without buying a new receiver, that would be great.
Before you do this, there's something you have to bear in mind, which nobody seems to know or mention.
For some weird reason unknown to mankind, ARC does not have the same features as HDMI audio, instead featuring the same capabilities as SPDIF (aka coax/optical), that is, it's limited to stereo PCM and 7.1 Dolby Digital/DTS (that's DVD-era audio, no Dolby TrueHD/DTS HD MA).
Also, when the TV is connected via HDMI it will report only supported the formats I mention (this can be easily be verified by connecting the TV to a Windows PC and going to the "supported formats" tab for the appropriate sound device in Windows' Sound control panel).
This said, if you intend to send HD audio (Dolby TrueHD, DTS HD MA, Dolby Atmos) over to the AVR, you'll be SOL if you go through the TV.
Same thing if you intend to play PC games for example, and feed the PC's HDMI (PCM) output via the TV to the AVR. Forget about multichannel (stereo PCM only, remember?).