Where can I find 4-pin XLR Female to 1/4 TRS Male adapter? I've tried doing a forum search and google with no luck. My headphones are terminated in a 4-pin XLR and would like to use them as single ended with other amps. Help! EDIT: I should also mention that I am NOT going to pay $100 to downgrade my headphones in single ended lol. I'm looking for the cheapest, prefereably pre-made cable adapter available as it's only going to be used as a means to end.