If a tube amp is powerful enough, it'll play loud enough. However, your room is NOT a small room. A "small" room is about 60% of the volume of your room, or less. I would categorize your room as "large-ish".
do tubes rock ??
I will be purchasing a new amp/preamp setup for a set of Thiel 7's. My musical taste is rock and roll music and I like it loud. I have a small dedicated listening room (20 x 24). I love the warm sound of tubes but am concerned that they will not provide the sound pressure levels I want from the speakers. Am I crazy ??