Issue with DTS-HD MA Passthrough on Sony XR55A80L and TA-AN1000

[micallefgilbert]

Hi everyone,

I hope someone can help me out with this issue. Please feel free to remove this post if it’s not appropriate for this forum.

I recently purchased a Sony XR55A80L TV and connected it to a TA-AN1000 amplifier using eARC. I’ve gone through the amp’s easy setup process and double-checked various settings on both the TV and the amplifier. However, I’m encountering an issue with DTS-HD Master Audio (DTS-HD MA) not being properly decoded.

When I set the movie's audio to 5.1, the amplifier correctly displays and decodes the 5.1 audio. But when I select a higher-quality audio track, such as DTS-HD MA, the amplifier shows that the audio is being downgraded to Dolby Digital Plus (DD+) 2.0.

I’ve tested this using both Stremio and Kodi installed directly on the TV. I’m using a high-speed HDMI cable, and as far as I can tell, all settings on both the TV and the amplifier are configured correctly.

To rule out any cable-related issues, I plan to try another HDMI cable.

One thing I’m unsure about is whether my TV supports DTS-HD MA decoding from installed apps. According to the manual, the TV supports passthrough of major formats, including DTS-HD MA, via eARC. However, I’m wondering if the issue could be that these formats are only supported via HDMI inputs (e.g., from an external Blu-ray player) and not from apps installed on the TV.

Here’s the list of pass-through audio formats supported with eARC as per the manual:

• 7.1 channel linear PCM: 32/44.1/48 kHz 16 bits
• Dolby Digital
• Dolby Digital Plus
• DTS
• Dolby TrueHD
• DTS-HD MA
• Dolby Atmos
• DTSMaster Audio
• MPEG2 - AAC/MPEG4 - AAC

Has anyone experienced a similar issue or have any insights into what might be causing this? Your help would be greatly appreciated!

Thanks in advance.

[micallefgilbert]

Just replying to myself here—hopefully, this helps others as well.

The installed apps on the TV only support audio formats up to Dolby Digital Plus (DD+). According to the TV manual, it supports most HD audio formats, but this applies exclusively to content played through devices connected via an HDMI cable.