Quote Originally Posted by tube fan
I just read the Stereophile review of the Bryston 28b, and they caution to use it with 6 or 8 ohm speakers. That lets me out! Trust me, I have a completely open mind. Remember, my favorite system at the CAS was the Evolution Acoustics when playing copies of master tapes and driven by ss units. The Audio Note system was in my top 3 rooms, and they only used CDs. Looking back on the show, I am still shocked how realistic the Audio Note system sounded. How much was due to the Jinro integrated amp, and how much to the Audio Note speakers, could not be determined. I am going to
audition the Audio note speakers with analogue front end on Friday. It might get expensive!
Ummm Tube fan, either you cannot read very well, or you are purposefully trying to be misleading. Here is the quote from the article on what you said

Bryston publishes only the 28B-SST's maximum power output into 8 ohms; no ratings are offered for loads of 4 or 2 ohms. However, run into 4 ohm loads, with the rear-panel circuit breaker bypassed, the amplifier won't clip until it's continuously delivering 1800W. The resulting current flow will trip the 15-amp breakers in most homes after 10–20 seconds of continuous power. Chris Russell explained that, because regulatory agencies test an amplifier at its rated power under home conditions, for the 28B-SST Bryston chose a power rating into 8 ohms that would not trip the average home's circuit breaker.

Here is your caution, which is not a caution at all:

While it definitely works better with speakers having impedances of 4 ohms or greater, Bryston's 28B-SST joins that select group of very-high-powered amplifiers that have sufficiently low noise and distortion to reproduce high-resolution digital recordings without compromise.

While it definitely works better, does not mean it cannot work at all. And what he means by work better is outlined in the above statement. It works better with speaker loads greater than 4 ohms because it does not trip the breakers in most folks home. For those like me who use 20 amp and 40 amp circuits, this is not a problem.