Quotation: Hello and good day, unfortunately we must inform you that you can only connect the changers on your Audi factory radio that your Audi dealer or Audi Deutschland recommends for your device model. Some Audi factory radios were/are produced by Alpine, but according to technical specifications of the vehicle manufacturer. this factory radios have a data bus format that is not compatible with that of conventional Alpine radios. lo, I sent (at the top) an email to alpine because of infos about cd-changers… honestly, I can somehow not believe what’s up there. are serious audio radios(or were) partly produced by alpine??? mfg fllx