Have gained me the Oehlbach Adapters, after a product launch in the FAZ Serves Anniversary Edition. He hatt a rich sound and running in my Passat on an outdated RNS 510 system. Want to be only a coupling possibility of telephone device. To transfer the audio files from the phone, an ideal solution. Einach stuck in the in AUX terminal, connect, finished. Already tried to beat my son and the domestic hi-fi system. All the best. Can only recommend the recipient. The withdrawal there for but very high price. And that you can not use directly as Bluetooth hands-free device Him.