Blues Junior Revision History

Fender introduced the Blues Junior in 1995, and has revised and updated it periodically since then. 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 cream-colored board is laid out entirely differently (and better) than the green board. The biggest change is the reworked reverb circuit. But the old ones sound darker, while the new ones are brighter, with more emphasis on treble tones. One is not necessarily better than the other; the dark tones are nice for blues, while the new amps do brighter, surf-y tones better.

Below is a table of revision dates and the changes made on those dates.

Revision Date Major Change
A Green Board 3/3/95 Product Introduction
B 5/15/95 Unknown
C 10/29/96 Revised preamp and FAT circuit
D 7/29/98 Unknown
A Cream Board 3/21/01 Revised reverb circuit, new board layout
B 4/20/02 Added fuse on filament line
C 2003 Corrected backwards polarity on filter cap for -15V reverb supply

Most of the modifications recommended here for the green board simply help it to perform as well as the cream board.

When was my Amp Made?
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 codes are usually handwritten, and the letters can occasionally be hard to decipher.

1990 A January A
1991 B February B
1992 C March C
1993 D April D
1994 E May E
1995 F June F
1996 G July G
1997 H August H
1998 I September I
1999 J October J
2000 K November K
 2001 L December L
2002 M    
2003 N    

Fender discontinued date codes in 2003. There is no reliable way to date 2003-2005 amps other than to ask Fender customer support to look up the date from the serial number. 2006 amps have a small metal "Fender 60th Anniversary" button on the back plate. 2007 amps are undistinguished.

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