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2. Alpine Electronics - Wikipedia

   en.wikipedia.org/wiki/Alpine_Electronics

   An Alpine car audio remote control. 1981- World's first automotive navigation system, created for Honda as the Electro Gyrocator. 1982 - World's first in-car computerized equalizer. 1983 - Alpine introduces their first remote control auto security systems. 1984 - Alpine introduces the Model 9500 Mobile Cellular Telephone. 1990 - 7909 CD Tuner.

3. List of car audio manufacturers and brands - Wikipedia

   en.wikipedia.org/wiki/List_of_car_audio...

   This list of car audio manufacturers and brands comprises brand labels and manufacturers of both original equipment manufacturer (OEM) and after-market products generally related to in-car entertainment that already have articles within Wikipedia. While components sold by these companies have much in common with other audio applications or may ...

4. Polk Audio - Wikipedia

   en.wikipedia.org/wiki/Polk_Audio

   Polk Audio, Inc. is an American manufacturer of audio products best known for its home and automobile speakers. The company also produces a wide range of other audio products, such as amplifiers and FM tuners. The company's headquarters is in San Diego, California. In 2006, it was bought by Directed Electronics. [1]

5. Heathkit - Wikipedia

   en.wikipedia.org/wiki/Heathkit

   Oscilloscope OL-1 from 1954, the company's first with a relatively small 3-inch CRT which allowed for a highly competitive price of US$ 29.50 (equivalent to $345 in 2024) for the DIY kit. [1] Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company.

6. 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.

7. 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 ...