While we are on this topic, i seem to have either a problem with my detector or all 3 pairs of headphones i own. I run an explorer se pro, i use conductive sounds, normal response, volume max limits, variablilty max limits. The problem is with the headphones on there is no flutiness to the tones like there is without headphones by just using the external speaker. It works this way and i didnt even realize it til i was watching a youtube video with a guy using an explorer and i realized that mine didnt sound like his. So i unhooked them and sure enough, it sounds just like its suppose too, nice flutey sounds with lots of variation. As soon as i hook up my headphones the hi pitched signals like silver or copper coins just sound like a high pitch beep instead of a flutey high pitched sound, Its hard to explain, i was using the original koss ur phones that came with the detector new, i have also tried some sony stereo headphones i have and another pair of a friends, they all sound the same, i have tried reducing the volume and gain thinking its just so loud its sounding bad similar to having a radio up too loud. I dont know what to do about it, the detector is a year and a half old, i hve emailed minelab and they say to read my owners manual, lol, i have read it way too many times along with andy's book and trust me its not some kind of setting, im thinking either something is wrong with the headphone jack or its something internal, unless the koss and both other pairs of headphones are so cheap that it makes it sound like a standard beep tone detector similar to whites or garretts. Any ideas anyone? THanks