Hello Jeff, Hi Jeff, I just got a ’70s silverface Fender Twin Reverb that needs a little TLC.Surfing the various forums, I’ve learned that this master-volume edition of the Twin is one of the most (unfairly, to me) maligned designs.The type of face, grille cloth, type and number of speakers, type and number of knobs, etc.only come into play when you’re trying to value the amplifier in the Blue Book for Guitar Amplifiers per the model description that is provided. Oddlings – Yet another printing error has surfaced, this time from the FEI (pre-CBS) days. Besides, no article in the Dating Fender Amps by Serial Number series would be complete without some interesting information, n’est ce pas?
: The transformer number tells you when the transformer was made and not necessarily the date the amplifier left the Fender Factory, the “2 Letter” date code on the Tube Chart or QA Sticker actually tells you that and that makes it the most accurate option for dating the month and year it was made....
Blackface Twin Reverbs are the most coveted versions of this amp.
With their stated power of 85 watts, they are the most powerful Fender amps of the era.
They are not of a concern with dating as only the 2 letter date codes on whichever chart or sticker and the transformer number comes into play for that....
There are other ways but the above is a more accurate method.
I promise the tables will still be there after you finish reading.