Joe, I have spent time with ART27A and it may be the best amp I have ever heard. Aside from its sound, Jeff hit the ball out of the park with the new metal work. It is elegant. Sonically, it take KT88s to a whole new level. The sound is pure, clean, with a real sense that you are there. I found its magically addicting. My room is 16x33 and my speaker are 87db @ 4ohms. Not the ideal scenario but it still played well. Next year when we move and I have a smaller room I will buy it. Joe, please call.