So, finally I've got the biggest Bluetooth dongle-ever!
Sony STR-DN1080 oh my....
For bloody LDAC sake!
Moreover, I forced to mate them :3
All goes almost as I wanted, except for one thing: I have no freaking idea, what exact BT-protocol are they enjoying themselves.
This receiver natively supports LDAC both RX and TX.
Moebius declared to support LDAC too.
So, the question is
: HOW COULD I KNOW, WHAT EXACT BT-protocol ARE MOEBIUS USING NOW?
10 minutes later...
Oh, wait, I am not a complete retard!
For a reason unknown , among the tons of wastepaper, Sony provides it's products, there were not a single line about BT options.
Still, there is simple and elegant solution, available on their own site:
https://helpguide.sony.net/ha/strdn108/v1/en/contents/TP0001221203.html