Hey everyone.... I am interested in getting a Fender Bassman head, and it is looking like the Blackfaces have a better tone, but the silverfaces have more volume due to their 100 watts. I have heard that the AB763 circuit is the one to have, but that is found in the blackface. Soon after, CBS bought Fender, and circuits and quality changed.... in 1965. some Silverfaces were made before the switch... but do they ever come with this AB763 circuit? I want an amp that is wired well, with the best circuits and all that jazz. what do you all recommend that I do? I wonder if the 50 watts that the blackface is limited to would be enough of live performance.... but is it worth it for a tone sacrafice? thanks. alastair.