I've searched for the answer to this but have not been able to find an answer. I currently have a 1999 A4 with the standard Concert Cassette and 6CD set up in it. I am looking at fitting a Dension iPod interface that will render my 6CD changer useless as it uses the changer input. Is there an equivalent Concert CD head unit that I could swap mine for, to at least allow me to play CDs from the dash? Would this headunit have the input for a 6CD changer? I pressume eBay would be the place to find it but would just like to confirm that it would be a straight swap.