I'm out hunting with the CTX, get a target and start pinpointing. While pinpointing, the target audio breaks up, comes and goes, or completely goes silent. This happens when I use my Pro Gold headphones, which were modified, by the maker, to use with the CTX, the standard Koss headphones that come with the CTX or no headphones just the detector speaker. Will be calling Minelab tomorrow to see what they say.