Hi rikraq,
By pressing the Sound Control button (which looks like a gear), you can set the audio function. The desired item can be adjusted using the Up/Down buttons. Each time the mode changes, the Multicolor LED blinks in white. SpaceFit Sound - ActiveVoiceAmplifier - Voice enhancement - Night
mode - Sync - Virtual are the different sound modes.
When you get to the desire sound mode, press the UP button on the remote to turn on, and DOWN to turn it off.
^Andrew