I've had this stereo for seven months and it worked great up until now. The sound goes in and out almost constantly. It will be playing fine, then start to skip, and then will stop completely, only playing bass. It does this no matter what I'm using, be it radio, iPod, iPhone, or SD card. I gave it three stars instead of one, because if you get this head unit, and it works fine then it's definitely worth the money.