Sony UBP-X800M2 - Dolby Atmos via USB HDD?

[Snuupy23]

Hi guys,

Today I bought the above Sony blu-ray player and I'm very happy with it!But, is it a restriction that this device cannot play Dolby Atmos via USB HDD?

TV: SONY XR-65X95J

Receiver: Yamaha RX-V585

HDMI Cable - Ugreen 2.1 HDMI up to 8K.
BD Player: Sony UBP-X800M2 with software: M45.R.0058

I had no problems with my Nvidia Shield Pro 2019.

On Blu-ray disks, it plays Atmos with no issues.

Also, it plays DTS: X perfectly via USB!

[HannahEd01]

HEy Snuupy23, the player only supports DTS on certain inputs, it doesn't support it or Dolby Atmos from HDD USB. Check pages 35 & 36 below: 

https://www.sony.com/electronics/support/res/manuals/4740/8f0f1f980088675abec8cbc2cc0cc993/47408231M... 

[Snuupy23]

Thank you!

Also it did not say that plays DTS:X for MKV files, but it does. 
Howevery I bought my 4K disk and it plays Atmos just fine.

[HannahEd01]

Hey Snuupy23, glad to hear it. And you're most welcome!