Headphones are a pair of small loudspeakers that are designed to be held in place close to a user's ears.
Headphones either have wires for connection to a signal source such as an audio amplifier, radio, CD player, portable media player, mobile phone, electronic musical instrument, or have a wireless receiver, which is used to pick up signal without using a cable.
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11 years, 9 months ago by Florian Brucker |
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5 times |
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10 years, 8 months ago |
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