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A pair of head-mounted speakers that are positioned over the ears. For listening to music or monitoring live performances, both left and right channels are required. Although often called headphones, when a microphone is included for telephone or video calls, the device is technically a "headset."

Some of the Best Sound
Headphones allow listening to music without disturbing others, but they are also used by discerning audiophiles. High-quality headphones can provide an extraordinary listening experience that is far more affordable than room speakers. Headphones are driven by much lower amplification, and by creating a sealed listening chamber, they can sound as good as or better than stereo speakers costing many thousands. There is also no need to configure speakers for surround sound to match room acoustics. See earphones, virtual headphones and headset.

A Venerable Model
Grado Labs' SR60 headphones debuted in 1994 and are still being sold more than two decades later. Grado is a small, committed company in Brooklyn, New York that celebrated its 50th year in 2003.

One of the Best
Using mahogany speaker housings, the Grado Labs' GS1000 has been considered by audiophiles as one of the finest headphones ever made. It even makes a mobile device sound like a theater hall.

Wireless Headphones
Numerous wireless models are also available such as this unit from Sennheiser. Wireless headphones use FM radio frequencies as well as the 2.4 GHz band and Bluetooth. See Bluetooth.
References in periodicals archive ?
The app relays sound from the microphones in one earbud to Waverly Labs' servers, displaying a transcription of what it hears on screen and, after a short delay, its translation, which it then speaks into the opposite earbud — which is presumably in the other person's ear.
Qualcomm was an early pioneer in the concept of true wireless stereo a technology that is designed to completely eliminate the need for wires, not only between the media source and the headphones, but also between the left and right earbuds, offering users a wire-free stereo audio experience and supporting new use cases like hearables.
Wireless earbuds are not necessarily new to the eyes of techies, and the difference depends typically on the features.
Vice-versa, if the earbud knows about an empty charging cradle, it can automatically inform the user via Bluetooth notification to charge the device's battery.
However, the sales of completely wireless earbuds got delayed due to engineering issues.
The radio industry has been concerned about measurement of listening while wearing headphones or earbuds.
The Sport button on the outside of the left earbud will give an update on the progress, including distance, time, heart rate and other useful tracking data, when running or walking.
Don't be fooled by the sleek exterior, each earbud contains a powerful 6mm driver that delivers a high-quality, distortion-free sound.
Don't be fooled by the sleek exterior - each earbud contains a powerful driver that gives distortion-free sound.
With the EarPods, bass is much cleaner, with distinct tones, though it still lacks detail--solid performance for an earbud, but not up to the level of, say, an inexpensive canalbud or canalphone.
If only one speaker is acting up, the problem is likely the connection in that earbud.
A small volume-reducing circuit is placed in the length of the earbud wire that prevents sounds from exceeding 85 decibels--about the level of city traffic--but still allows ambient sounds through.