If you’re looking to upgrade your car stereo, there are a few things you need to do first. First, make sure that your car is compatible with the new stereo. Second, find a good test audio source to check out the sound quality. Third, set up the new stereo in your car and listen for any improvements. Fourth, evaluate how much money you’re spending on the new stereo and whether or not it’s worth it. Finally, shop around for deals on car stereos and accessories to get the best deal possible. ..