One of the things that most impressed and surprised me about the Susvara was not that it sounded great with great recordings, but that it made poor quality historical classical music recordings enjoyable. I happened to be listening to opera recordings from the early 50's on Warner Fonit Cetra, made on subpar equipment even for the time. On speakers and on other headphones they were sometimes simply unlistenable: thin, metalic sound with no bass. I can't explain why or how, but the Susvara enabled me to enjoy and appreciate these recordings while showing all their defects. I suppose this is the "euphonic" aspect of the Susvara (it's not the "new gadget" effect, these recordings really sound better). Part of it is that the Susvara revealed details that added to the quality of the experience, like a little bit of ambiance, or nuances in performance that, while taped very poorly, were still present but not retrieved by my speakers or other HPs'.