Hello Jazzabana,
The HW-Q990B Soundbar will be able to connect to a smart device via Bluetooth, or an iOS device using AirPlay. For your Apple 4K TV device you will need to connect to a 4K TV using an HDMI cable, and then connect the HW-Q990B Soundbar to the TV itself using the TV ARC/eARC port using a HDMI cable.
~Samsung Solutions