As I understand it at the present Clair is using a combination of QSC PL 9.0's or Crest pro series on subs and Macrotechs on the high boxes (oh nooooesss, 2 airflows in the racks!
). And then of course they use the old Carver amps they have a million of on just about anything. The Carvers seem to be out with the smaller 1-0ff type gigs with the older R and S boxes.
The Clair branded smaller QSC stuff is generally what they sell with their retail'ed systems such as 12AM packages, or installs done by Clair's install department. I have not seen them use it much on their tours.