The music quality of your audio system also depends on the source from where the music or sound is played. There are many options like from the smartphone, a CD, DVD or the regular AM and FM stations. Your vehicle might be perfectly all right with good audio systems but the source from where music or sound comes might have some problems http://autoradio-1001.com/nl/. So while analyzing the car`s audio system, also analyze and check the source from where the sound waves are produced because they are the major points that impact the music that finally comes out of the speakers to your ears. If you are using your phone, check the cables, if it is a CD, try to use the latest player models.