I auditioned a pair of these at a local audio store this morning. I heard that they are based on Orthodynamic technology and was really curious about what an Ortho sounds like. I plugged them into my Sony NWZ-A816 MP3 player without expecting much at all. The seller at the store told me that they are "just OK," and I certainly believed him - the price tag on them said "$149", but I knew that these can be bought for even less online, so "hmm yeah..." I thought, "...these are probably just another typical studio monitor in that price range, like Sony V6 or Senn HD280Pro and have all those typical flaws in their sound as well..." But once I plugged them in and hit "play" on my Sony, I was like . How the heck could something so inexpensive sound so damn great?! I was totally blown away by how realistic they sounded! The best thing about these is the mids I think - they are just sooo even and natural! I listened to some of my favorite instrumental and jazz through them and all the instruments and vocals sounded like they were right there beside me! The transient response and clarity of this headphone was also incredible - I've never heard anything quite like this before. The detail resolution seemed even better than that of my ES3X, since I could hear details in the music I've never heard before! The bass seemed to extend very deep and the highs sounded a bit subdued, but still really detailed, clear and natural. Now, this is the first time I've listened to Orthodynamic headphone, so take my impressions with a grain of salt. Does anybody else here love these guys? I am about to order a pair off ebay. For only $70 + shipping they seem like an incredible bargain for the sound that they produce. I honestly don't think that any armature or dynamic driver based headphone at that price even begins to approach these Fostex cans in sound quality.