For wired audio, consult these:
1. If you are connecting a Mac or iPad, enter the computer/tablet’s audio
menu and search for and select “external headphones” as the output device.
2. If you are connecting a Windows notebook, enter the computer’s audio
output menu and select the computer itself as the output device.
3. If the supplied audio cable is unable to create a connection, try connecting
headphones with a 4-pin cable to test if your device is able to receive audio.
If it is able to receive audio via the headphones, follow the instructions
above to switch audio devices.