Very good retrofit solution for the car

Have the Bluetooth Adapteer for my old CLK with car radio / navigation system Comand bought 2.0 and am very satisfied. I use an iPhone 5S as an audio source and Bluetooth-setter. The music quality is much better than with a fixed cable to the AUX input of the Comand 2.0 via Bluetooth. Unfortunately, my CLK is also one of the models that interfere with the Bluetooth transmission, resulting in an ugly pipes. Here the mass separation filter FGA-35 PAC has completed the remedy. Only the Re-Connect, which promises Bluetooth 4, works with the iPhone only sporadically. Maybe it's on the iPhone. Overall, still a super solution with great audio quality.