Audio devices and methods of operating an audio device

An audio device comprising:

• a first receiver configured to receive, from an audio source, audio information over a first wireless link;
• a second receiver configured to receive, from the audio source, audio information over a second wireless link,
• wherein the first receiver and the second receiver are further configured to communicate with one another over a third wireless link;
• wherein at least one of the first receiver and the second receiver comprises:
• a measurement circuit configured to measure signal strength of the third wireless link;
• a comparison circuit configured to compare the measured signal strength of the third wireless link against a predefined threshold during a predefined duration;
• and
• an operation mode controller configured to switch the audio device to operate in a sleep mode, based on the comparison indicating that the measured signal strength of the third wireless link is larger than or equal to the predefined threshold during the predefined duration.