Everything about Air Tight is what I was looking for. The amp above that Doug posted is the ATM-1 is supposed to be an amazing amp. Great PRAT and bass too. It was replaced by the ATM-1S.
I have the air tight atm-2 and when my audiophile friends have listened to various amps driving my Magico speakers one of the favorites always chosen is the ATM-2....rocking in good company with like of Constellation.