I don't normally use Bluetooth with my HiMedia Q10 but, just for you, I just tried it out!
I have AKG Y50BT headphones. I went to Settings > More > Bluetooth on the Q10 and pressed the Bluetooth button on the headphones. They paired up in about 10 seconds. Went to Kodi 18 and tested Music and Movies with perfect sound on both.
My Q10 box had Official Firmware 2.0.6 and Android 7.0 but I've just upgraded to Official Firmware 2.0.7 and the headphones are still working perfectly!!!