Car audio refers to the sound system installed in vehicles, designed to enhance the listening experience while driving. It typically includes components such as speakers, amplifiers, and head units, which work together to produce high-quality sound. Many modern car audio systems also support features like Bluetooth connectivity, allowing users to stream music from their smartphones. Upgrading a car audio system can significantly improve sound quality and overall enjoyment. Aftermarket options are available for those looking to replace factory-installed systems, offering a variety of choices in terms of power, clarity, and additional features. Popular brands in the car audio market include Pioneer, Kenwood, and JBL.