Car audio/video (car AV), auto radio, mobile audio, 12-volt and other terms are used to describe the sound or video system fitted in an automobile. While 12-volt audio and video systems are also used, marketed, or manufactured for marine, aviation, and buses, this article focuses on cars as the most common application. From the earliest days of radio, enthusiasts had adapted domestic equipment to use in their cars. In the 1960s, tape players using reel to reel equipment, Compact Cassettes, and then 8-track cartridges were introduced for in-car use.

Alarms	Amplifiers	Automotive Lights
Capacitors	CD Headunits	DVD Headunits
Enclosures	Equalizers	FlipDown Monitors
Media Receivers	Satellite Radio	Sound Deadening
Speakers	Subwoofers