Select Dialogue Boost on Prime Video for Web, Amazon Devices, and Mobile Devices
Activate Dialogue Boost during playback of a supported title on Web, Amazon Devices, and Mobile Devices.
- When you’re playing a title, select the Closed Caption or Subtitles icon. You may need to tap your device's screen in order to access this menu.
- From the Audio section, select the Dialogue Boost frequency to be Medium or High based on your preference.