I bet that thing sounds....well, as good as the source. If you're listening to a crappy collection of illegally downloaded randomly ripped mp3's then save yourself the money. But if you have (as mellymelsr showed me in Vegas) a FLAC music player or other high resolution music storage player this will be worth the money.
Isn't it interesting how form has followed function. It's not ugly, but it's obviously built around the operational properties of Klipsch's research and not of a designer who is trying to make it pretty.