Hi, I'm selling my 2b pro that has the following configuration: Power switch in place of the headphone jack and unbalanced RCA inputs. This gives you a 2b with level controls. I have the balanced input connections if you wish to reconfigure the amp to have balanced inputs. The face is excellent and there are some slight marks on top. The amp was modified by Bryston to eliminate turn off transients. No manual but a good shipping box is included. Pictures upon request. $350 firm + actual shipping. USPS money order or cash for local pick-up is welcome. Thanks for looking. I'm in Delaware.