Swans' Song II
This is the system to which the crowd in the above photo were paying rapt attention. Or rather the left and right speakers in that system (my photo of the entire system didn't fare well).
Swans trots out a similar system every year, and I'd like to hear it sometime in a more suitable environment than a show booth with its ceiling open to a cavernous convention center space. I was actually surprised that it sounded as good as it did this year, but would certainly not call it beyond criticism; the demo circumstances weren't doing it any favors.