I bought this thinking cable buy quality (and that in any air), but after only a few days of use on my mixes pregnant, I had whistles, then the muffled, the pbs in the stereo effect ... I tested on several sources, same problem! So, return to sender, and Amazon does not even propose an exchange, just a refund (since I'd have to recommend 25 for free shipping). I'm probably just fallen ill, but on a cable of this quality is not very serious.