Of all the audiophile gear available, the Bryston amps offer the most risk-free opportunity to buy-and-try. That's what I'd suggest. Buy some used 7B-ST monos. Listen to them in your own system, and let your ears be your guide. If you don't like them , you'll be able to re-sell them with virtually no dollars lost on the experiment.
Having said that, I owned a 4B-SST and 14B-SST. They were dead silent. Black as night. Nice controlled bass that could shake the foundation, and nice top end extension. Great imaging. I never heard an ST series amp, but the SST series are supposed to have more refined high frequency reproduction.
Having said that, I owned a 4B-SST and 14B-SST. They were dead silent. Black as night. Nice controlled bass that could shake the foundation, and nice top end extension. Great imaging. I never heard an ST series amp, but the SST series are supposed to have more refined high frequency reproduction.