Fender silverface twin reverb dating
Thanks, John Gilbert Matt Alcott Hi John, The Twin Reverb design has been through many iterations since its 1963 debut.
The signal level can then be reduced prior to the output stage to control overall amp volume.Model/Circuit Number: AC568, AA769, AA270 Years of Production: 1968 – 1982 Era: Silverface Configuration: Combo Controls: Silver, forward facing w/ blue labels Knobs: Black skirted w/ chrome center, numbered 1 – 10 Faceplate Bias: Fixed, adjustment pot or balance pot Rectifier: Solid State Comments: A master volume was added in 1972.Other late seventies circuit changes included a Line Out jack, hum balance pot, and a pull boost sw.Some players actually prefer these models, however, because they tend to compress more easily than any other Twin.
According to the dates on Fender schematics, these “improvements” only lasted for a year.
The tube is fed a signal (from channel 2, or the “vibrato” channel, in the case of Fender reverb amps).