An entry level balanced cable for Sennheiser HD600 / HD650 / HD580 (and others with the same connectors), to 4 pin XLR input.
This cable is the stock cable made by Sennheiser for the HD600 / HD650 (product code 092885), that we have modified by removing the TRS jack and attaching a 4 pin XLR.
If you have any questions just ask.