Headphone/Bluetooth audio device volume cannot be adjusted.

Select within the text to jump to the related settings screen.

• If you cannot adjust the headphone or Bluetooth audio device volume with the VOL +/- buttons, press the ACTION MENU button and select [Headphone volume]/[Bluetooth volume].

Bluetooth A2DP-supported models that can use Bluetooth audio devices have [A/V sync] in [Settings] — [Display & Sound] — [Audio output].