The stereo that is built into a car might not produce the quality of sound that a person wants it to. The one who buys a new vehicle and turns up their favorite music in that vehicle might be disappointed with the way that things sound. It can be nice for a person to invest in a car stereo and to have that added to the vehicle. A car stereo that is purchased separately from the car can change the way that a person listens to music when they are on the go and it can make every driving experience a little more fun.
The stereo that a person invests in might be one that helps them really get their bass booming and that helps them catch attention from others when they are driving around. Some will want to go with a car stereo that helps their music get really loud and that helps them to blast it any time they want. The stereo that a person invests in might simply help their music come off more clearly and smoothly than it did with the stereo that was built into the car when they bought it. The one who is choosing a car stereo has to know what they want that stereo to do.
Some will invest a lot in a new car stereo and new speakers for their car. Others will not be as willing to invest a lot of money in that kind of stuff. Each person has to figure out whether or not it is worth it for them to invest in something like a car stereo and how much they want to spend if they decide to make the investment. A person has to figure out if they can install the new stereo on their own, too.