Dating fender speaker codes
Fender introduced the Blues Junior in 1995 and has revised and updated the amp periodically since then.The 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.The table Below details the revision dates and the changes made on those dates. The code can be found on the Quality Assurance label located inside the cabinet.The label is often located on the bottom next to the reverb tank, sometimes it is placed on the side.
Fender does not always include these limited edition versions in their updated catalogs (or on their website) either because too few were produced (only a few hundred in some cases) or perhaps because of exclusive retailer agreements.
The standard Blues Junior is dressed like a traditional black Fender amplifier, with black Tolex upholstery and a silver cloth speaker grille.
Although they differ in their external visual aesthetic, all variants of the Blues Junior for a given year are produced with the same electronics, apart from the speaker/driver.
Notable differences include the Fender "lightning bolt" speaker, "sparkle" circuit modification, rattle-reducing shock absorbers, set-screw "chicken head" knobs, "dog bone" handle, larger Fender jewel light, black non-reflective control panel, and "Blues Junior" subtext on the logo plate.
A set of three matched Groove Tubes 12AX7 preamp tubes and two matched Groove Tubes EL84 power tubes, graded according to Fender's specifications, are used in all factory Blues Juniors.
The Blues Junior is a tube guitar amplifier introduced in 1995 by the Fender company.