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  2. Personal sound amplification product - Wikipedia

    en.wikipedia.org/wiki/Personal_sound...

    The amplifier (an electronic circuit) increases the amplitude of the electric signal using a power source (battery). The speaker converts the amplified electric signal back into a sound wave. The volume (gain) control is used to adjust the amount of amplification applied to the electric signal and thus, indirectly, controls the sound volume.

  3. Audio power amplifier - Wikipedia

    en.wikipedia.org/wiki/Audio_power_amplifier

    Audio stereo power amplifier made by McIntosh The internal view of a Mission Cyrus One hi-fi integrated audio amplifier (1984) [1]. An audio power amplifier (or power amp) amplifies low-power electronic audio signals, such as the signal from a radio receiver or an electric guitar pickup, to a level that is high enough for driving loudspeakers or headphones.

  4. Headphone amplifier - Wikipedia

    en.wikipedia.org/wiki/Headphone_amplifier

    A headphone amplifier is a low-powered audio amplifier designed particularly to drive headphones worn on or in the ears, instead of loudspeakers in speaker enclosures. Most commonly, headphone amplifiers are found embedded in electronic devices that have a headphone jack, such as integrated amplifiers , portable music players (e.g., iPods), and ...

  5. Sound reinforcement system - Wikipedia

    en.wikipedia.org/wiki/Sound_reinforcement_system

    A typical sound reinforcement system consists of; input transducers (e.g., microphones), which convert sound energy such as a person singing into an electric signal, signal processors which alter the signal characteristics (e.g., equalizers that adjust the bass and treble, compressors that reduce signal peaks, etc.), amplifiers, which produce a ...

  6. Audio headset - Wikipedia

    en.wikipedia.org/wiki/Audio_headset

    A telephone amplifier provides basic pin-alignment similar to a telephone headset adapter, but it also offers sound amplification for the microphone as well as the loudspeakers. Most models of telephone amplifiers offer volume control for the loudspeaker as well as a microphone, mute function and switching between handset and headset.

  7. Headphones - Wikipedia

    en.wikipedia.org/wiki/Headphones

    A telephone amplifier provides basic pin-alignment similar to a telephone headset adaptor, but it also offers sound amplification for the microphone as well as the loudspeakers. Most models of telephone amplifiers offer volume control for loudspeaker as well as microphone, mute function and switching between headset and handset.

  8. Crest Audio - Wikipedia

    en.wikipedia.org/wiki/Crest_Audio

    In 1983, the 4001 amplifier was the first to provide two-ohms in a three-rack space chassis. Four years later the 8001 power amplifier became an industry standard concert sound amplifier. It was superseded by the 8002 model in 1998. [3] In 1989, Crest audio diversified into mixing consoles with its Gamble EX series. Two years later the company ...

  9. Ringing (signal) - Wikipedia

    en.wikipedia.org/wiki/Ringing_(signal)

    Ringing can affect audio equipment in a number of ways. Audio amplifiers can produce ringing depending on their design, although the transients that can produce such ringing rarely occur in audio signals. Transducers (i.e., microphones and loudspeakers) can also ring. Mechanical ringing is more of a problem with loudspeakers as the moving ...