Dating fender amplifier
There are some easy ways to find out when your vintage Fender was manufactured.
First, to get a general idea,there’s the appearance/style of the amp.
Use the latest one to give you a good idea of when it was made.
For example, if your silverface super reverb has transformer codes all from 1974, it was made in 1974! Based on the last number (45), it’s safe to say it was made in late 1974.
It will give you a sound that may or may not suit your own style, abilities and other gear. I've attempted to describe this technology in lay terms and avoid technical jargon as much as possible.
I've also attempted to write as objectively as possible, however, I expect you'll soon note my preferences for hearing tone from all components in the signal chain: the guitar, amplifier and speaker.
In the above example, the transformer was made in either 1966 or 1976, week 45.
Fender’s amps, unlike their guitars, are not tracked by the serial number.
In order to date a Fender amp or provide the value, you need to know one of the below: * The 2 letter date code rubber stamped on the Tube Chart, or * The 2 letter date code on the QA Sticker, or * The Transformer Number that starts with “606-XX-XX”, with the 3 or 4 Xs being the unknown numbers that need to be provided by the owner of the amplifier asking the question.
The tube chart date code works like this: the first letter indicates the year and the second letter indicates the month.
So if your blackface amp has a date code stamp of OB, it was made in 1965/February.