Thanks, guys. My main concern was when this amp would "run out of gas". I chose this one over the Monsoon or Hurricane amps(both are @2000 used) because it is SET. I am not too familiar with the Rogue M-120 other than just what I have read on Agon. I figured if I was going to experiment with tubes, I might as well go SET. If many of you feel that the SET amps are underpowered for the Alto Utopias,I may go in another direction.
Thanks again
Pepe