The 'Blonde' and 'Brown Tolex' Blues Juniors feature traditional Fender Tolex upholstery in their respective colors, while the Sunburst Ash edition features an ash cabinet with a sunburst stain. Some of these have been artificially aged from the factory and are known as Lacquered Tweed 'Relic' editions. Lacquered Tweed editions, as the name implies, feature a cabinet upholstered with a lacquered tweed fabric. The later circuit boards are cream or tan colored and sound 'brighter' or more treble-oriented, with the reverb situated before the Master volume. Many green board models have excessive noise in the reverb circuit, as the signal is inserted into the reverb after the master volume. The earlier circuit boards are green in color and are noted for a 'darker,' more bass-inflected tone. The original circuit board underwent a major redesign in 2001, when production moved from the US to Mexico. Several limited edition versions of the Blues Junior have been manufactured since its introduction in 1995. two matched Groove Tubes EL84 power tubes (graded to Fender's specifications).three matched Groove Tubes 12AX7 preamp tubes (graded to Fender's specifications).'chicken head' vintage styled control knobs.independent preamp and master gain controls for tube overdrive management.also operable with optional remote foot-switch (not included).'Fat' pushbutton switch boosts gain and midrange frequencies in preamp stage.Fender spring reverb (driven by a solid-state opamp).

Tweed Relic Edition Blues Juniors ship with Jensen model P12R.NOS Lacquered Tweed Limited Edition Blues Juniors ship with the Italian manufactured Jensen model C12N.standard edition Blues Juniors ship with a Celestion A-Type speaker.one 12-inch, 50-watt, 8-ohm driver (connected with 1/4-inch phone jack for external speaker option) model varies with edition:.single-channel 15-watt all-tube amplifier.

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