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2. Headphone amplifier - Wikipedia

   en.wikipedia.org/wiki/Headphone_amplifier

   Effectively, a headphone amplifier is a small power amplifier that can be connected to a standard headphone jack or the line output of an audio source. Electrically, a headphone amplifier can be thought of as an amplifier that presents a very high input impedance (ideally infinite) and presents a lower output impedance (ideally zero) and larger ...

3. Computer speakers - Wikipedia

   en.wikipedia.org/wiki/Computer_speakers

   A pair of external speakers for notebook computers that are powered and audio-connected to the computer via USB. Computer speakers, or multimedia speakers, are speakers sold for use with computers, although usually capable of other audio uses, e.g. for an MP3 player. Most such speakers have an internal amplifier and consequently require a power ...

4. Headphones - Wikipedia

   en.wikipedia.org/wiki/Headphones

   Headphones are a pair of small loudspeaker drivers worn on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Headphones let a single user listen to an audio source privately, in contrast to a loudspeaker, which emits sound into the open air for anyone nearby ...

5. Jabra (brand) - Wikipedia

   en.wikipedia.org/wiki/Jabra_(brand)

   Jabra's wireless earbuds range, September 2023. Jabra is a Danish brand specializing in audio equipment and videoconferencing systems. It is owned by GN Audio, a division of the Danish company GN Group. [4] Jabra engineers, manufactures, and markets wireless, true wireless, and corded headphones for consumers and business customers.

6. High fidelity - Wikipedia

   en.wikipedia.org/wiki/High_fidelity

   High fidelity. Hi-fi speakers are a key component of quality audio reproduction. High fidelity (often shortened to Hi-Fi or HiFi) is the high-quality reproduction of sound. [1] It is popular with audiophiles and home audio enthusiasts. Ideally, high-fidelity equipment has inaudible noise and distortion, and a flat (neutral, uncolored) frequency ...

7. CMoy - Wikipedia

   en.wikipedia.org/wiki/CMoy

   A CMoy is a pocket headphone amplifier originally designed by Pow Chu Moy. [1][2] The headphone amplifier is designed around single or dual-channel operational amplifiers (op-amps) such as Burr-Brown 's OPA2134 or OPA2132PA, however, a wide variety of op-amps have been successfully implemented. As the op-amp directly drives headphones, some ...