Hi Hedss.
Thanks for the fast reply. Out of desperation I ordered a BT donlge yesterday because I really want to give my Pi this role as I think it is neat. Now let’s see if I can make it work, any advice or shold the system just recognize it right away?, the model I chose is TP-Link UB400.
About the distance…every probe I made was just dropping audio from either a laptop or a mobile phone from within 30 to 50 cm.
I have also commented here Unable to Use balenaSound on Raspberry Pi. I uploaded a photo about the product so I do here. I am confident that is not cables or other stuff outside the Pi.
Best.