Dating fender blues junior amps catrell dating
The original circuit board underwent a major redesign in 2001, when production moved from the US to Mexico.
The earlier circuit boards are green in color and are noted for a "darker," more bass-inflected tone.
However, because they "run hot", a common modification is to add a bias trim to enable adjustments to the idle current when switching tubes.
Fender introduced the Blues Junior in 1995, and has revised and updated it periodically since then.
One edition was issued with a forest green colored cabinet, had a United States flag on the cloth speaker grille, and had United States Air Force markings detailed on the cabinet in yellow.
Lacquered Tweed editions, as the name implies, feature a cabinet upholstered with a lacquered tweed fabric.
Some of these have been artificially aged from the factory and are known as Lacquered Tweed "Relic" editions.
Amps made in 2006 have a small metal "Fender 60th Anniversary" button on the back plate. In 2010 Fender updated their line of hot rod model amps and released the "Blues Junior III," adding many physical changes to the standard black tolex model.
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.