Sorry for the inconvenience this might cause you but it does not support it.
The KW41 supports BLE 4.2 and the A2DP it’s a Bluetooth classic profile.
So, the KW41Z can't be used to communicate with the headset of bluetooth classic, and it is not compatible with HFP(Hands-free Profile) either, is it right?
Thanks a lot.
You are right, and the reason why is because BLE is not intended to be used for audio streaming; it has the sleeping times to be low power and the packet size tend to be small.
Sorry for the inconvenience this might cause you.