Buzz TV XRS 4500 - stereo only?

[vindi]

I have a Buzz TV XRS4500 connected to a Denon X3400H receiver which supports ATMOS. I have a 5.1.2 setup. When I look at the source info from the BuzztV it alwas shows up as stereo only. No matter what I play. Even If i play a local file/movie which is either 5/1. 7.1 or ATMOS - the input to the receiver always states stereo and then my stereo upmixes this to ATMOS.
Does this box not support multichannel audio natively?

 

[NBS]

c and p

Majority of streams from IPTV are in 2.0 Audio
If you have a stream that is broadcast in Dolby or DTS, the Buzz app is capable of streaming it using Software Decoding through FFMPEG.

 

[vindi]

Understood about the streams. What about local files though? Am I missing something in the settings? I tried everything, but still seems to be outputting only in stereo. I used VLC as the player for local files.