I also got an audition of one of the crazier speakers at the show: the AER speakers. These use what look to be some Lowther-type driver, augmented by huge (plastic?) "lenses" surrounding them, focusing the sound towards the listener. Very crazy looking. No bass to speak of. But holy cow, when I got in to a close seat in the center for an acoustic guitar piece, it was perhaps the most vividly "real" sounding presentation I've ever heard of an acoustic guitar. It wasn't just the clarity, but the sense of the guitar right in front of me moving air, like a real guitar, with every pluck. Fascinating!