I recently bought a Gold Monster 1000. I have a pair of Gray Ghost head phones that I love that have 1/4 in. plug. I've tried 3 different 1/4 by 1/8 adaptors and the gray ghost hphones work good but the internal speaker still works, It won't cancel out the speaker on the detector. The hphones that came with it work fine but I hear better in one ear than the other so I need to use my gray ghost with a volume control on each side. have any of you had this problem.