excellent review. I can vouch for the comments regarding the tube like nature. I have been a fan of tubed equipment for quite awhile. I have found the 7B SST2 to be much like a tubed design with the open mids and highs and the transparency. I have not heard the 28's, but since the 7B's have the same technology/ design as the 28's, I am sure I am hearing much of what I would hear with them. I have not had any yearning for a tube amp since getting the 7B's. Quite an accomplishment.