I use this cord for the acoustic connection between my Lumia 820 and my Corsa. Even while unpacking we noticed the good quality of the connector and the cable insulation. The cable is very good in my view, for use in the car suitable. Now to the function: As I said, over the cable I listen to music from my phone via the car radio. And it works brilliantly. No creaking, no noise or other disturbances. Also the sound is great - I can not tell the difference to an MP3 CD in the car with me.
Conclusion: I am thrilled and can only recommend the cable.