Hi Saphira5,

no, the TV cannot output sound through headphones or a Bluetooth audio device as well as through the TV speakers. Please note that only models with Bluetooth A2DP support can use Bluetooth audio devices such as headphones or speakers. For models with Bluetooth A2DP that support Bluetooth audio devices, [A/V Sync] is set under [Settings] - [Display and Sound] - [Audio Output].
Further information can be found on our support page.

Sony Europe