I heard them a couple of years ago at the Stereophile show in NY. I think this was a prototype then, it's probably undergone some changes. They were driven by the Cary 805 sig. SE amps and used the Kimber Black Pearl speaker cable ($15000). The sound was incredable. I am not a Vandersteen fan and have never been impressed with any other speaker by them. This was different though. It was musical, detailed with excellent imaging and a huge sound stage. Expensive though.