Works fine with CX-9. I know theres a lot of mixed reviews on here about this item, but let me tell you how to avoid having a bad experience with this bag. I was afraid to wear them as I was afraid my feet would slip fight out of them. These are exactly what they?re advertised to be! (Cabernet) (This is the most common bit of digital audio gimmickry to fool you into think it sounds ?crystal clear?. Den Sound (meist Rock / Metal) empfinde ich grundsolide und auch etwas besser und ausgewogener als bei den (wirklich guten) Buds+. B&O unterdrückt aber auch ganz gut. It took me about an hour to build and was a little short but it looks great . Just push the button and extend the arm.