I saw few similar topics (with uniti e.g.) about epson projectors not being able to connect to Mu-So 2. IT seems the most likely reason is the Naim not supporting SCMS-T bluetooth technology.
I need to have the epson splitting audio end video and sending the former to the speaker. So far, it worked successfully with all my bluetooth devices (ampli, headphones, speakers) but I would love to have the mu-so 2 as my all-in-one solution, Is there a solution for this problem - besides having to buy a bluetooth sender/receiver?