The Bryston is perfect. Any harshness you hear will come from something else. If there is something in your system that you are trying to counteract, however, neither the Bryston, nor either of the other two preamps you mention, will do that. Some tube preamps might, like an old AI M2d, but not the M3 or M3a, maybe a Melos if you can find one, and some of the CJ's. I'd figure out where the harshness is coming from first and get rid of that.
