A car audio system is a collection of electronic components designed to play music and other audio in a vehicle. It typically includes a head unit, which is the control center, and various speakers that produce sound. Some systems may also feature amplifiers to enhance sound quality and subwoofers for deep bass. Many modern car audio systems support Bluetooth connectivity, allowing users to stream music from their smartphones. Additionally, they may include features like USB ports, CD players, and radio tuners. Upgrading a car audio system can significantly improve the listening experience while driving.