I just bought a real nice clean hardly used set of Rat Phones off the Forum. I can not hear any sound through them with my detector. Classic IDX)I tried turning the volum all the way up..I tried reversing the cord...Nothing. They are the Single Volume type but they have a very small what looks like a toggle sticking down only it doesn't move. Anyone know what this is for and why I can't hear anything. I am very hard of hearing and could it be that the volume just won't go high enough? My Gray Ghosts work fine. Drop me a line if you have any ideas. dkdist@clatskanie.com