# Audio Operation

Switching On and Off
Adjusting the Volume
Selecting an Audio Source
Set/save DAB+ radio stations (GPB18V‑3SC)
Setting/Saving FM Radio Stations
Setting the Rod Antenna
Playing Back External Audio Sources via Bluetooth®
Controlling External Audio Sources via Bluetooth®
Playing External Audio Sources via Multi-Speaker Sound
Transmitting the Current Playback via Multi-Speaker Sound
Changing Settings
Menu Options (GPB18V‑3C)
Menu Options (GPB18V‑3SC)