I’ve a FireStick 4K Max Gen 2, Plex app 2026.12.0 connected to a HDMI input on a Denon receiver. FireStick audio = Best Available, Plex app has passthrough = HDMI.
DTS 5.1 plays OK. The Denon receives DTS 5.1 audio.
DTS HD-MA 5.1 does not. The Denon is not receiving any audio from the FireStick.
I’ve been trading messages with one of the developers. There’s an open issue and they’re investigating. They’ve my client & server logs and sample files.
I’ll update if there is anything to report.
