The 3B-ST is a much different and much better amp than the 3B and significantly better than the 3B-NRB. Come up to Canada, where the 3B-ST sells brand new for the equivalent of US$1250. But if you ever get a chance, spend that 1-1.2 K on a pair of Meitner monoblocs. Ten years since they stopped production, but they're still serviced and upgraded at the ADS factory in Calgary, and I've never heard anything (not that I've heard everything) that comes close for that kind of money. Overall, though, unless you're spending well over $2K for a 100 wpc amp, you won't do better than the 3B-ST. Forget about Rotel, Anthem and the others. Just my 2 cents' worth.
Joel.
Joel.