Now a warning - they are open-backed so some sound leakage is expected but with these cans leakage is VERY pronounced - certainly higher than the aforementioned HiFiMan 400s I had recently and my wife remarked she could hear the music loud and clear from the next room. Hope this works. I suspect the initial problem was mine as I tried to "paior" the device directly with my i-phone were-as you "MUST" go through the App to "pair" the device to your phone! Adatta al periodo primaverile/estivo. All in all, its a nice product to store shoes. I got the natural and it is well made and attractive. What I am getting at here is that the combined total power draw of the items I had connected to this StarTech PDU was nowhere near its rated current, and that is in addition to the fact that most of the connected equipment was not even turned on at the time. And when you place your foot inside OMG so comfy and soft, i love the fur feeling! Look at the picture where the bolt is touching the top tube. I included a photo so that you can see a 10 on a 9.