Speakers are not the only way to listen to music or sounds. There is a more personal way to enjoy it in the form of headphones. Headphones include a single speaker or a pair of small loudspeakers that are held close to the ears of the user. They can be connected to an audio-frequency signal source to receive an audio output.

The headphones can be easily connected to an amplifier or a radio as well. They can also work with a TV or a CD player. Some of the models can be combined with a microphone for communication purposes. In this form, they are known as headsets.