In answer to the above questions, the Tetons are 4 ohm speakers. My listening room is 13' wide x 21' long (speakers along the short wall) with a large archway behind the listening position that goes to the dining room, 13' wide x 11' deep. I agree that under normal listening conditions, I would never use the power put out by either of these amps. But, like a lot of you, I get the urge to let loose once in a while with some Yello or Kraftwerk. Also, I don't like to have to push the amp; I would rather have it coasting along so that it has plenty in reserve for whatever dynamic peaks come along. BTW, I listen to just about anything, but most of it is classical, jazz, and bluegrass.
Bill