Hey James,
A quick note to let you know my new 4B3 is nicely warming up after a few months of play.
The Bryston amp is the centre piece, the foundation of my system. Whatever I throw at it....new components, a variety of speakers, tube sources, subwoofers, new power cables....anything at all, and it keeps rocking nicely!
I sold my beloved 4BSST2 to help with the purchase of the 4B3. At first, I was saddened to see the squared hit the road.....i had thought it would be my forever amp. But this new 4B3 is definitely an upgrade!
What i notice most, is at low level listening (when the boss is home) the music remains tremendously engaging. And of course, when I'm alone, the amp let's it all hang out. It absolutely rocks! Solid as a rock. It is subtle, smooth, clean, powerful, flexible and most of all....makes me happy - especially with the Magnepan's at full tilt. Love it.
Thanks Bryston!!

TJ