Bryston preamps

The primary question would be, what are you trying to improve upon in your system?  If you can elaborate on that along with the rest of your system I think you'll get much better and more helpful recommendations. 

Im actually using a 14bsst now and going to the cubed version. There is some glare in the 7k region. That according to a free spectrum analyzer app. Maybe I should wait and see if the cubed Bryston tames it. I have acoustically treated my room with curtains , panels and tube traps.. Vinyl does not have as much harshness but I am upgrading to a Marantz as-10

So, what are your source components, speakers, and cables, and are you using any power conditioning?

Sorry SA-10 .

Marantz 8005 sacd player. PS audio P1000 power regenerator powering everything but the amp. OHM 5000 speakers with Canare 4s11 speaker wire. Pangaea and PS audio power cords and Pangea SE interconnects. Analog set up is a fully upgraded AS final tool TT with Graham 2.2 forearm and an Ortofon 2m Black cartridge and an Acoustech ph1 p phone preamp. I have the speaker cables 2 feet off the floor. All components isolated with cones or damping material. Dedicated AC line