I have tried Bryston, Adcom, BHK, Classe, and Anthem - when I purchased a used pair of Model 7's - everything above was put to shame. My son got a used model 112 - what it did for a pair of ML Motion 40's was simply unbelievable. I have met Jeff, and I have met some other "gurus", Jeff is a fine human being - his service is EXEMPLARY. The only thing that can replace a Rowland is another Rowland. Looking for a 625 S2 if anyone wants to dump one.