I was measuring the level at which I sometimes reach listening to certain well engineered tracks... and they easily approach and surpass 100db (RS analog meter, A weighted, slow), and with my equipment (see sig), it is extremely clean and powerful, with the EP500 supporting on the ultra- low end. I havent heard the M22 / EP500 combo, but if you ever intend to really crank it and expect clean, effortless reproduction... consider an M60 / M80. My room is 12 X 15, with the left side open in the listening postion. I'd consider the room mostly reflective.
