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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 ?
NASDAQ: SKUL) the original performance and lifestyle audio brand focused on consumer-centric innovation, continues to deliver on the promise of technology-based breakthroughs with the latest additions to their Sport Performance line, XTfree(TM) wireless and XTplyo(TM) earbuds for men and women.
During sports and fitness activities, the wires of today s earbuds are a genuine inconvenience and can potentially be unsafe.
Apple's solution is to position the sensing apparatus just inside the earbud frame.
According to Mashable, the earbud is not permanently attached and users can choose whether or not to use it.
This design creates a zero gravity effect as it moves the pressure away from the ear canal because the earbud is secured from above, preventing slips and slides, and enhancing the listening experience.
The microphone is not integrated into the remote module but it is situated on the left earbud itself.
Plantronics intends to become a market leader in wireless earbuds with the BackBeat Go 2, and the second generation model is significantly better than its predecessor.
Based in the Phoenix, Arizona area, HearBudz aims to solve three of the main problems with most traditional earbuds out there.
Creators Russell Athletic said said the earbud cable had been incorporated directly into the jacket, which runs through the inside to a 3.
The result is crystal clear audio in the most convenient, Bluetooth earbud on the market.
The study, confirmed that Valencell earbud sensors were a valid and reliable instrument for continuous measurement of heart rate during exercise.
Pearbuds are completely wireless earbuds designed to be both the smallest on the market, and with the longest battery life of any Bluetooth-enabled earbud.