Same question for AR12c with implemented bluetooth 5.0
I found no information about the supported bluetooth protocols and the supported codecs via bluetooth.
It would be very helpful to know if its possible to connect a bluetooth headphone (e.g. Plantronics BackBeat Pro) which supports aptx LL. Without Low Latency bluetooth transmission its really hard to work on a PC with DAW-Software and via MIDI connected keyboard.
The normal Bluetooth latency is so high that you can't play the keyboard in realtime.