Looks like a full-size stereo jack to two mono mini-jacks. If you have any soldering skills you should be able to make a cable like that up quite easily, so you should be able to buy one. Full-size stereo jack to two full-size mono jack is extremely common - known as an Insert cable (or Y cable) - as it is used to connect effect boxes like compressors into a mixer.
It might be wiser to stick with Sennheisser, though, they make good solid gear - and I could be wrong!
― Chewshabadoo (Chewshabadoo), Thursday, 31 March 2005 08:27 (twenty-one years ago)