Looking to upgrade to a 4K Bluray: Bluray -> Amp -> TV, or Bluray -> TV -> Amp?

[NeilF]

I have an LG OLED E7 TV, and an Onkyo 646 (with a 5.1 speaker setup).

I currently have a regular 1080p Bluray player which I'm looking to upgrade to a 4K player.

I'm wondering if someone can suggest the best means of connecting it, and any issues/limitations I might encounter with audio such as Dolby Atmos.

So the two options seem to be:-

Bluray player --HDMI--> Amp --HDMI--> TV
or
Bluray player --HDMI--> TV --HDMI ARC--> Amp​

The latter is obviously the more straight forwards, has less risk of the Onkyo messing around with the video (eg: I don't think it supports Dolby Vision?), and indeed this is the setup I currenty use for all my Netflix, Amazon Prime and Plex viewing (ie: TV --HDMI ARC--> Amp). ie: Just watch the stuff on the TV, and pipe the sound over ARC to the amp.

Anyone able to clear up any issues/limitations with either of the two wiring options given the bells and whistles of HDR, Dolby Vision and Dolby Atmos etc etc etc available with a 4K Bluray player?

Thanks!

 

[NeilF]

Get a UHD 4K Blu-ray player with dual HDMI out for exactly this reason.

HDMI 1 (picture only) output goes directly to the TV for full beans Dolbyvision goodness.

HDMI 2 (audio only) goes directly to the amp for full HD audio with ATMOS (if the amp supports it) and no problem if the amp doesn't support DV.

Job sorted.

Thanks...

Yes, the Onkyo 646 supports Atmos and DTS:X (bearing in mind I have 5.1) - https://www.whathifi.com/news/onkyo-tx-nr646-and-747-amps-feature-dolby-atmos-and-dtsx

And you recon that I'd notice an audio difference with the 'sexy audio' going straight to the Amp, rather than via TV--ARC-->AMP?

Reason being is the dual HDMI units cost significantly more than the basic single HDMI ones

 

[NeilF]

So question - With a dual output bluray player setup as follows:-

• Bluray --HDMI--> TV
  
• Bluray --HDMI--> Amp

Does the audio get sent to both the TV and Amp? ie: For simple viewing, can I just leave the amp off, and turn the TV on, and get TV audio from the bluray player?

And then if I turn the Amp on, will I than have to fiddle with the TV volume (to turn it off), so as to only hear the sexy audio from the amp? Or does it then not send audio to the TV automatically?