One is not necessarily better than the other; the dark tones are nice for blues and jazz, while the new amps do brighter tones better.All green board and all cream board Blues Juniors are identical electronically, despite what the salesman told you. Below is a table of revision dates and the changes made on those dates. Fender adopted a two-letter dating code in 1990, and the code can be found on the Quality Assurance label, inside the cabinet, sometimes located on the bottom, next to the reverb tank, sometimes on the side.The serial numbers for these amps begin with “LO,” indicating that they were made in the Fender/Sunn Lake Oswego factory. It usually applies to old vacuum tubes/valves that have gone unsold for decades. All cream board tweed Blues Juniors have a “Limited Edition” plaque on the back.

Dating fender transformers video

The list of artists who've used a Fender guitar amp live or on record is enormous.

It seems as if everyone has used them at some point, including Elvis, Chuck Berry, Buddy Holly, The Beatles, Rolling Stones, Oasis, The Strokes, Radiohead and White Stripes, to name but a few.

Other cabinet coverings include blond Tolex, dark brown Tolex with a wheat-colored grille (custom for a Canadian music store chain), and the Texas Red Tolex.

Stock Speakers Outside the chassis, Fender has used several different speakers in some Blues Junior models.

Finally, the last two digits of the code 13 would stand for the 13th week of the year.

If your amp is all original, you might find that the dates on the speaker and transformer can vary by several months, so I would probably be inclined to use the later date when trying to date the amplifier since the later dated parts were probably installed last in the manufacturing process.

There should be a code stamped into the metal case on the transformer that looks something like this: EIA606-813.

The EIA stands for Electronic Industries Association and the 606 is the source code for the manufacturer, which in this case is Woodward-Schumacher.

The V30 is known for its strong midrange and is well suited for classic rock/lead guitar.

It’s a little weak in the bass and the highs are a bit more muted than the other speakers.

Blues Junior history can be divided into two major categories: the early amps with green circuit boards and the later ones with cream-colored boards.