Exacly the same experience with Bose headphones. Turned low the right one is active, turning up only right. I had this issue ca. 1.5 years ago. Then it changed to goog, by exchanging all the cables over the weeks, turning them left to right and the other way around. Suddenly it was OK, but i did not realize, what action was the solving of the REALLY NERVING Problem. And now: It is back again!!!! Nerving! I did not any changes. Just turned it on and it was there. Ordered new Cables... nothing changes. THIS MUST BE A CONSTANT BUG! Any help?
