[hed-fohn] 
| 1. | Audio. a headset designed for use with a stereo system. |
| 2. | any set of earphones. |
| head·phone (hěd'fōn') n. A receiver, as for a telephone, radio, or stereo, held to the ear by a headband. |
headphone
small loudspeaker (earphone) held over the ear by a band or wire worn on the head. Headphones are commonly employed in situations in which levels of surrounding noise are high, as in an airplane cockpit, or where a user such as a switchboard operator needs to keep the hands free, or where the listener is moving about or wants to listen without disturbing other people. A headphone may be equipped with one earphone or two and may include a miniature microphone, in which case it is called a headset. For listening to stereophonically reproduced sound, stereo headphones may be used, with separate channels of sound being fed to the two earphones.
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