Bryston can be percieved as bright to certain ears. I've been through a few tube preamps and the best one by far for my Bryston gear, or any other amp for that matter is, Copland CTA 301 MKII with NOS Telefunken CCA tubes, blew away my Bryston BP25. Can be had on the used market for $1200us, its exactly what you are looking for. Coplands new CTA 305 is supposed to be even better, and can be had for $2300 new, but I havnt heard it yet. The Audible Illusions 3a preamp is pretty good also, but the Copland more transparent and refined. Do a discussion search on Copland
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