I heard the Ovation with Nagra electronics, the Parsafal with Berning electronics and the Sarastro don't remember the electronics. All at the Montreal show in 2005. The Parsifal/Berning set-up one of the ground floor large rooms was the highlight of the show to me. I spent the majority of the 3 days in that room. It was a dismal, rainey weekend so visiting the sights was limited. One of my biggest regrets was not taking advantage of purchasing those speakers at a significant discount. They are indeed special speakers and priced accordingly. The sound by the end of the weekend was just amazing, real lifelike dynamics. I would attribute much of this to the proto Berning amp and pre. The other Verity rooms were excellent as well but in smaller spaces. Among my most memorable audio experiences .