The first thing that many of us do after getting in our automobile is to switch on the radio. It is a simple way in which many people seek a few moments of relaxation while on move. People at times like to play loud music and feel the energy, play soothing music to soothe frayed nerves, or listen to news, updates or interesting programs to stay connected. Whatever the reason, a car audio system is the most popular car accessory nowadays. Automobiles come with an audio system from manufacturers, or get custom ones later to suit individual preferences.

The history of car audio dates back to the 1930s, when the Galvin brothers introduced the first car radio, named Motorola ('motor' meaning motion and 'ola' meaning sound). Innovations kept happening in many parts of the world. It took another forty years to develop audio amplifiers, in a quest to develop something just more than a radio. Since then, there have been more and more sophisticated devices which can stand the temperatures and vibration of automobiles. Modern speakers are not even visible, but produce good acoustics and sound quality.

Car audio systems come in a wide range of brands, setups and prices. After deciding on a budget, you can look at the possible options. Car audio systems are available in at both regular and discounted prices. Basic things which are difficult to change later should be selected with thought and care. For instance, whether a unit is able to play CDs, cassettes, radio or all of these should be looked at first. Some parts, like speakers, subwoofers, amplifiers, crossovers, equalizers, and mobile video (VCRs, television, DVD and navigation) can be upgraded later. Component compatibility between different brands and options for add-ons should also be looked at.

High-end installations have more functions and are relatively expensive. However, even with a lower budget you can get a decent system. In short, the decision should be based on a system's ability to play tapes, CDs and the radio. Some people feel satisfied with a radio, plus a tape player and are not tempted by CD players. It should have a decent sound quality. We can imagine the irritation felt when a favorite track or program does not sound clear and sharp.