Here's one for you.
I have a w950i and a w880i and I also have a Sony MEX-BT5000 bluetooth car stereo.
When I stream music from the w880i it comes through great, but, when I stream music from the w950i the left and right audio channels are reversed (left audio comes out of right speaker and right audio come out of left).I rang SE Technical but they have no clue, they said that I had to call the service centre which I did and they just said that if I sent it back they would take a look.
Has any one ever heard of this, it is SO strange?!! 😮