I had the Thiel 7's which I think were harder to drive than the 7.2"s and I used 1 Classe 300 and the Thiels sounded great!! I have owned 5 different sets of Thiels and STRONGLY recommend Classe with them. You mite have noticed that at alot of shows you will find a combo of Thiel, Classe and MIT cables. It is true that with Thiel, the more power the better but I would, without a doubt pick Classe over Krell. I think Krell is over priced and to "Dark" for Thiels. Good Luck, the 7.2 is an excellent speaker and Thiel is the best company I have ever delt with!
