I have a sharp dr480 which has a 3 pole 1/8 jack instead of your normal 2 pole. The third is just a ground, supposedly sounds better. I'm planning on switching to an mp3 player and I want to use my mega awesome earclip headphones that came with the minidisc. Problem is the 3 pole jack. Attempting to plug it in to a 2 pole jack results in a fuzzy tin can sound. So where in the heck can I find a 3pole to 2pole bridge? THANKS!