I use 2 CA150 amps as mono also and run an Anthem tube pre with great results, always wanted to try a Classe but the Anthem fell into my lap with no regrets.
Classe' Preamp comparisons
Anyone ever had the opportunity to compare some of Classe's preamplifiers? Specifically a CP-35 to say, a model Five? Or how about either of those to a CP-50? I'm not sure of the Classe' history, but I do know that I like their sound. Just wondering which units really give the best sonic bang for the buck. I currently run a CA-100 amp into Maggies 1.6's and it seems to be a good match. I have a CP-35, but sometimes think there's something lacking....