DTS-MA Dolby-HD decoding FireTV?

Hi,

this might be a dumb question.
I have kodi / SPMC on a firetv 1 connected to a Anthem D2v. Audio set to passthrough, raw.
I got a couple of test-files for DTS, DTS-MA, Dolby True-HD.
They play fine on all 7.1 speakers, yet there are a little LEDs on my preamp for DTS-HD, Dolby / TrueHD that dont light up when I play the files.

Am I missing out on sound quality or is it already decoding properly it as I hear the sound ?

best babba