Depending on your car's model, a set of four aftermarket speakers can easily be installed, giving you a rich, loud soundstage. An upgraded CD or MP3 player (sometimes called "decks") will give your speakers the much-needed wattage they crave, driving them to crystal-clear quality at powerful volumes.
If you'd like to go even further, amplifiers and subwoofers will allow you to hear notes you never knew existed. Check out the articles below to learn more about car audio.
Articles