did youtry different headphones, try turning the eq off, can you hook it up to your stereo at home and listen to see if you can hear it that way. i have a mz-n510. its awesome but i ust admit it deas sound funny. it seems the mid range is too low or something. i have played it listening on mayn different speakers and headphones. are you making the disks from mp3's or straight from cd's?