A:
There is no built-in functionality for this in the NSDXA2. However, you can use any Bluetooth transmitter that would accept the audio out signal the NSDXA2 outputs. A quick search of the Best Buy site found me a few products you could use together to accomplish your goal.
See Skus:
1307055304 eForCity - Bluetooth Transmitter with 3.5 mm Audio Cable Compatible with HTC One M7
8560817 Hosa Technology - 3.5mm TRSF-to-Dual RCA Cable