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  2. Fisher Electronics - Wikipedia

    en.wikipedia.org/wiki/Fisher_Electronics

    X-1000 Series Integrated Amplifier; X-200 Series Integrated Amplifier; X-100 Series Integrated Amplifier; The Fisher was also used on Fisher's early US made solid-state equipment, such as the model 210 receiver. Fisher FM tuners and receivers often used similar designs and components thus allowing parts to be swapped between various models.

  3. Intermediate-frequency amplifier - Wikipedia

    en.wikipedia.org/wiki/Intermediate-frequency...

    Discrete transistor 455 kHz IF amplifier. More modern IF amplifier and demodulator in integrated circuit form Intermediate-frequency (IF) amplifiers are amplifier stages used to raise signal levels in radio and television receivers, at frequencies intermediate to the higher radio-frequency (RF) signal from the antenna and the lower (baseband ...

  4. 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.

  5. AV receiver - Wikipedia

    en.wikipedia.org/wiki/AV_receiver

    An audio/video receiver (AVR) or a stereo receiver is a consumer electronics component used in a home theater, home audio, or hi-fi system. Its purpose is to receive audio and video signals from a number of sources, and to process them and provide power amplifiers to drive loudspeakers , and/or route the video to displays such as a television ...

  6. Amplifier - Wikipedia

    en.wikipedia.org/wiki/Amplifier

    An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or current). It is a two-port electronic circuit that uses electric power from a power supply to increase the amplitude (magnitude of the voltage or current) of a signal applied to its input ...

  7. NAD 3020 - Wikipedia

    en.wikipedia.org/wiki/NAD_3020

    NAD 3020 integrated amplifier. The NAD 3020 is a stereo integrated amplifier by NAD Electronics, considered to be one of the most important components in the history of high fidelity audio. [1] Launched in 1978, this highly affordable product delivered a good quality sound, which acquired a reputation as an audiophile amplifier of exceptional ...