My iPhone 6+ plays over blutooth to volkswagen RNS810 media system with much lower sound quality than CDs or even AAC. Normally I cannot tell the difference between AAC and CD in my car. Does the A2DP implementation here send AAC files from iPhone to RNS810 or there is some other re-compression going on on the way ? Also no titles show on the RNS810 screen. How to get best sound quality here and see track information on RNS810 screen? TIA.
