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Fender Tube amp codes: - look for a 2 letter code stamped on the tube chart inside the back of the amp - the first letter is the year, and the second letter is the month. An amp stamped NA would have been made in Jan. Here is a list of the first letter showing the year of manufacture. These codes have nothing to do with the serial number that is stamped on the right rear of the chassis - Those numbers are posted below. These codes are for amps with the serial number beginning with a letter:.

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Tolex is the textured vinyl material that covers the amp; offered in many different colors and textures over the years. Tweed refers to the two-tone woven fabric that covered many early amplifiers.

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On early amps, this material was varnished to make it a more durable covering. Several different types, in vertical and diagonal weaves, were used.

Jun 13,   Pro Reverb AA (blackface) A to A - A to A - A to A - Pro Reverb AA, AB, AA, AA (silverface) A to A - A to A - A to A - A to A - A to A - A to A - A to A - The Blackface Fender Pro Reverb has skyrocketed in popularity over the years, though it took a while to get there. Considered "too weak" for the mids market, today they're beloved for their signature Blackface sound and breakup at much more manageable volumes than a Twin Reverb. Example: Vibrolux Reverb with serial number A should be a '77, but the latest date-coded parts date it to Some serial numbers have a letter prefix plus 4-digits instead of the usual 5- or 6-digits.

Although the dates derived using the charts below will likely be a good approximation, they should not be considered exact. This sticker is a chart that shows the types of tube types used and the order of their physical location in the amplifier, and may be rubber-stamped with two-letter date codes that denote the year first letter and month second letter of production.

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These stamped letters may appear in various positions on the chart. If three digits are present, the first digit refers to the year i.

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If four digits are present, the first two digits refer to the year i. The last two digits refer to the week of the year i. For example, EIA would denote the 21st week of It is also advisable to add about 6 months to the date to allow for time these parts may have spent in inventory storage.

If four digits are present, the first two digits refer to the year i.

Jul 21,   Help Dating Vintage Fender Pro Reverb Discussion in 'Amps/Cabs Tech Corner: Amplifier, Cab & Speakers' started by austratman23, Jul 17, Jul 17, #1. austratman23 Supporting Member. Messages: Joined: Feb 6, Location: Atlanta. Hi Guys. The Fender Pro Reverb is a high-end guitar amplifier made by Fender. It was in production from and was discontinued in It was in production from and was discontinued in The Pro Reverb is a watt tube amplifier and has a pair of 12" speakers; however, models later than were increased to 70 watts. DATING EARLY FENDER AMPLIFIERS Dating early Fender amplifiers is sometimes quite challenging. While dating Fender amps made before by serial number is all but impossible (as records of these numbers were never kept), all hope is not lost-the charts below should prove helpful in dating .

The last two digits would refer to the week of the year i. An example would be: EIA would mean the 21st week of All Fender amplifiers, manufactured after include a date code on the amplifier. This code is located on the "QA" Quality Assurance sticker, which may be found on the back of the amp chassis.

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The sticker is a Black and Silver label, which contains several lines for "sign-offs" at the completion of sound and electrical tests, where applicable. The last line will have 2 letters of the alphabet either printed or written by hand.

Pro AA, AB (blackface) A to A - A to A - Pro Reverb AA (blackface) A to A - A to A - A to A - Pro Reverb AA, AB, AA, AA (silverface) A to A - A to A - A to A - EIA numbers taken from the transformers may help you to determine the date of production on amps that fall between the different dating schemes. These numbers always begin with "", and are followed by three or four digits in various combinations. If three digits are present, the first digit would refer to the year i.e. ("7" would mean ). Sep 15,   Fender recommends dating unstamped amps by the EIA number on the transformers. The format is always EIA Y-XX or YY-XX where Y indicates the year (Y/Y or 19YY respectively) and XX the week. Try the serial number. Dating by Missing: pro reverb.

Good luck reading some of the hand written ones. These letters are the production date code for the amplifier.

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The first letter refers to the year, and the second letter refers to the month of manufacture. You will need to get the date codes from the speaker frames, the potentiometer date codes, the transformer codes and as much other detailed information you can about the specs and features of your amp. If you have a serious interest in learning about the history of Fender amplifiers, or if you just want to try to establish the year of production of your own amp, I recommend that you pick up the following book.

Fender used speakers manufactured by the following companies:. Jensen supplied all Fender speakers until approximately Since Fender used speakers from all the above companies.

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This information is not for commercial use, and cannot be copied, posted, pasted or otherwise used in any publication or web site. Early Fender Electric Blackface amps from and some into early did not have a Fender Logo on the grillcloth.

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A good amp tech can make these sound great. InFender removed the "Tail" from the logo. A push-pull pot was added to some amps in Therefore, if you have a push-pull pot, your amp is or newer.

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Years Made. Tubes Required.

Fender Pro Junior - #38 Doctor Guitar

Bandmaster Head. Bandmaster Reverb.

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Bassman Head. Bassman "59 Reissue.

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Bassman Ten. Blues Deluxe.

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Blues Deville. Blues Junior.

Together this makes the Pro Reverb break up significantly around the usual volume level 4, while the Twin Reverb is clean almost all the way up. The power transformer and power tube circuitry is equal to the Super Reverb, but a smaller output transformer lowers .

Vibro Champ. Champ II. Super Champ. Champ

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