I own a B&K Reference 200.2 S2 amp, which is their current production amp. This thing never runs out of power and is very quiet. It only have a couple of inches above it to breath and yet it still hardly gets warm. With a new tube preamp, I would actually begin to make comparisons between this amp and tube amps. Nothing but smooth music at all volumes. The bass on this amp is very impressive. No subwoofer required even on music that would normally need it. I am powering a pair of Dali Ikon 6's with it. I have however powered many other pairs of speakers with it. As others have said, I would keep this amp even if I bought something better. Hope this helps
