I have a Marantz AV 10, and I bought both AURO-3D demo discs:
Looking through the audio files, many of them are 7.1 PCM and the others are DTS-HD MA 5.1 and 7.1. There are no files I've found so far that are natively AURO-3D.
IMAX Enhanced content is just a modified DTS:X, but it still shows up differently in my pre-pro without me touching anything. From what I've tested, I need to enable the AURO-3D upmixer
when watching AURO-3D content just like I would with Dolby Pro Logic and Pro Logic II.
Am I wrong?
And it doesn't even work 100% of the time. With the Vol. 2 disc, everything enables height channels, but with the original 2014 disc, I couldn't get the height channels to activate while the AURO-3D upmixer was enabled neither in PCM nor DTS-HD. This is very strange. I really thought AURO-3D was a native format; heck, there's even something called Auro3D Native.
The Yamaha RX-A6A I own also has AURO-3D capabilities. I haven't yet tested it, but this line in Yamaha's release article makes me wonder what it means:
Source: What is AURO-3D®? An In-Depth Exploration - Yamaha Music
It would make sense that AURO-3D requires the upmixer because it can ride on another format like PCM, Dolby Digital (AC3), and DTS. This way, it's available on all sorts of players like Roku, Apple TV, every Smart TV, etc and will work even if you don't have the proper decoder (just like Dolby Pro Logic).
If AURO-3D really is something that needs an upmixer, does that mean that some DTS-HD 5.1 discs are actually AURO-3D in disguise? Yamaha noted some movies as being in AURO-3D, and I'm wondering if their tracks are DTS-HD MA but really AURO-3D in disguise:
- American Sniper (Atmos)
- Black Panther (Blu-ray is DTS-HD MA; UHD is Atmos)
- How To Train Your Dragon 2 (Blu-ray is DTS-HD MA; UHD is DTS:X)
- Red Tails (Blu-ray is DTS-HD MA)
- Spider Man: Homecoming (Blu-ray is DTS-HD MA)
- The Expendables 3 (Atmos)
From seeing these releases, there's some
evidence of AURO-3D from the use of DTS-HD MA, but most Blu-rays use DTS-HD, so it's not conclusive.