Bamyasi
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- Feb 19, 2019
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The answer is simple, Amazon documentation you have linked is outdated and plain incorrect (which is also true for 90% of the documentation found on their website, BTW). For the Fire Cube specifically, it depends on generation: Gen 2 seems to support HD/UHD but Gen 1 does not. You can find (a slightly outdated) list of tested Fire TV devices here. There was also a thread posted on AFTVNews forum some time ago with more useful details. Note, you will need to adjust the settings both for your Fire Cube and inside Amazon HD app on the device to enable Amazon Ultra HD support.So I just got a reply from Amazon. They stated:
While the Amazon Music app does support UHD quality music streams, the Fire TV Cube itself only supports up to 48khz.
You're welcome to look over the Developer page here for supported audio formats.
So the Fire TV is still the limiting factor. It seems hoping to get 24/192 on a Fire TV Cube because the Amazon Music App can do it was a false expectation. Checking the specs Amazon provided, this seems to be true for all Amazon Fire TVs (Stick, Cube etc.) at this point in time.
So I am really wondering how e.g. arglebargle above got 24/192 out of a Fire Stick (even with the audio stripper involved), when the FLAC and OPUS formats used by Amazon Music HD are limited on the Fire TV sticks to 48khz as per the spec page. Actually no format listed there is supported with 192khz.
Edit: Amazon has just started rolling out next Fire OS updates for all its Fire TV devices. It looks like Fire TV Ciube 1st Gen should receive Fire OS version 6.2.8.0 update as part of this rollout (details here). This is the same OS version Fire Sticks are using, so TV Cube Gen 1 may actually receive HD/UHD capabilities with it. I do not have one, so cannot test it myself.
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