Cheap way to get in the car my grandmother, my entire MP3's that I have on the mobile phone play. One should adjust the volume on the output device as high as possible, and the car radio quietly as possible. Then the bass something out and you've got to a tolerable quality. Of course, this is not a system of BSW Soround. compare new Audi's. But it still produces a good quality. And that says a really good value on abgeschmischte Music Sets.