[antlane]

Up until now, I've been using a Fire TV First Generation with SPMC. This successfully was able to passthrough DTS, DD, DD+ to my Sony amp.

I've just upgraded to the Fire TV Stick 4K and no matter which build I've tried - Matrix Alpha 1 or one of Fritsch's builds (either kodi-20200822-a7a83e17-PR18319-head-armeabi-v7a.apk or kodi-20200724-acbb8160-Leia-armeabi-v7a.apk), I only see the following in the passthrough options:

• AC3
  
• E-AC3
  

I don't see DTS, TrueHD or DTS-HD all of which are shown in SPMC (not that I need either HD codec).  Although though they're shown in SPMC, my amp doesn't switch to DTS and there is no audio.

In Kodi, I've set Number of Channels to 5.1 and Output Configuration to Optimized
For the Fire TV settings, I've selected Always Dolby Digital Plus.  If I select Best Available, DTS still doesn't appear
My Fire TV is running 6.2.7.3. It's been stuck on downloading an update all day but it appears I'm already on the latest software

Link to my log although I can post a more complete one when trying to play DTS content if that will help:
https://paste.kodi.tv/iyuxemalod.kodi

Thanks in advance for any help!