I wanted a pair of closed backs that are decently neutral, so I purchased these. They sound really great but the only problem is the cable is extremely propriety and extremely short. To the point where trying to get a 3m cable or any other is almost impossible. I found an ebay seller who takes sennheiser 600/650 cables and just changes the connector to XLR. I figured my HD300 pro was not balanced so I asked him if he can take a stock cable of the hd300pro, use the connectors and make a 3m cable, ending in a 1/4 inch connector. He told me they can do it in XLR but I didn't think it was a balanced headphone and was wondering if it was safe. Any help with this would be greatly appreciated because the current cable makes it impossible to listen with my main setup.