In my system the sound fills the room easily. They can easily get very loud if that is desired and fill the whole house with music. The best I can describe it is a "live" performance in your listening room, but with my case the "richness" of a tube system. One of my favourite CD's is Diana Kralls earlier work (the newer stuff doesn't grab me as much), a tribute to Cole Porter, the title escapes me, but every time I listen to the trio, it's like I'm in a club listening.

Neat stuff.
Cheers
FM