Onkyo

[suzyq10]

Does anyone know if Onkyo NR-646 supports HLG?

[Invisiblename]

@suzyq10  A Google search suggests - maybe:

But the following post suggests not 

[Scruffer04]

I have a 646 and unfortunately only supports HDR and not HLG or Dolby Vision. For my Sky Q box I have this directly connected to TV and then ARC to Onkyo for audio.

[TimmyBGood]

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@suzyq10 wrote:

Does anyone know if Onkyo NR-646 supports HLG?

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That's a 2015-release model, which would date its specification and manufacture to before HLG was established.

https://en.wikipedia.org/wiki/Hybrid_log-gamma 

[suzyq10]

I wondered if there could have been a firmware update?

[TimmyBGood]

@suzyq10 

I'm afraid some things need hardware too, and that box would have been produced before silicon supporting HLG was available to manufacturers..

There's a change-list for firmware here: 

https://www.intl.onkyo.com/support/firmware/tx-nr646.html 

The only significant addition appears to be DTS:X

Please note I'm not suggesting you apply a more recent version to your box: it's up to you to decide if you wish to risk that.

[Scruffer04]

A firmware update won't work as it is a hardware limitation I believe 

[suzyq10]

Thank you to all posters and replies. I have spent a fortune trying to modify my system and now I need to change the amp. Sky comes into my TV through an extender and accomodates Control4. Biggest waste of money ever! I will look at removing it all and putting all my gear in the living room with direct connections. Thanks again.

[suzyq10]

How could I bypass the amp for sky video but connect for audio?

[TimmyBGood]

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@suzyq10 wrote:

 I have spent a fortune trying to modify my system and now I need to change the amp.

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To be fair, a 2015 AVR has had a good innings, and might still get some interest on eBay.

[suzyq10]

This is what was recommended by the "smart home" installers. They also supplied me, at great cost, extenders, upgraded DVD and other add ons.  Anything I buy new needs to be programmed by them to operate the Control4 remote. This is also very expensive. Regarding your "good innings", I expect an amp to do 20 years plus. I have a Kenwood bought in 1999 and a Creek, still going perfectly after 21 years. It's only eight years old! Thanks again anyway.

[TimmyBGood]

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@suzyq10 wrote:

I expect an amp to do 20 years plus.

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Twenty years from now, possibly (although 8K support would be an issue in most cases), but good luck finding an AVR half that age which supports any flavour of HDR: it just wasn't a thing a decade ago.

Perhaps worth considering that HDR isn't 'amp' functionality: it's a relatively recent family of video industry digital data standards.  The oldest electronic amplifiers from more than a century back can still make analogue audio louder, but they don't tend to work so well with passing UHD to a television set.

[TimmyBGood]

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@suzyq10 wrote:

How could I bypass the amp for sky video but connect for audio?

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If the AVR is ARC capable (and the television capable of audio passthrough) then Q to TV over HDMI plus TV ARC HDMI to AVR may be viable.

[suzyq10]

Obviously I understand that an ancient AVR wont receive HLG. I only wish I had been informed by the installers before I spent £500+ on a HDR extender that does support HLG, through an amp that doesn't!