I am hearing loud static on the x10 (on pause or play at even the lowest volume) that I just ordered. The isolation is good and the eartips fit well. I've tried it on various sources (Ipod, laptops and an external sound card), and I'm plugging the wire in all the way. Is it supposed to be like this? I ordered it from a featured seller on Amazon. It came in a box with a bar code sticker on top of another barcode underneath it (does this mean it's a fake product?). But after googling it, I found that there is perhaps not supposed to be a serial number for the x10. Any suggestions?