I just purchased a pair of Steelseries Siberia V2 Blue Frost headphones which are powered by USB. They will not connect to my iPhone since, to my knowledge, there is no such thing as a working USB to 3.5 mm audio converter. I am using these headphones for gaming and music on the computer but can't use them for music on my phone. I have searched the internet for something that I could plug the USB cord on my headphones into so that the headphones could connect to my phones bluetooth and listen to music that way. Does a product like this exist? If I took apart an old bluetooth earpiece and found the part that connects to bluetooth in there, would I be able to use that to DIY a working bluetooth connector for the headphones? Is there any other way to connect a pair of USB headphones to iPhone, through bluetooth or not?