hey guys just wondering what kind of headphone adapter am I supposed to be using? i have a sony one (not sure what size it is) but for some reason when i connect it into my PHONES input, i have to leave some of the adapter out, meaning that if i push the adapter all the way in the sound waaaaay to low and when i have it popped out maybe 1/2 a centimeter it sounds perfect..is there a reason for this? anybody else have this "issue"?