What tubes does the Fender Blues Junior use?

The Fender Blues Junior uses 3× 12AX7 preamp tubes and 2× EL84 power tubes.

When was the Fender Blues Junior produced?

The Fender Blues Junior was produced 1995–2010.

Fender Blues Junior preset

Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Blues Junior is Fender's 15-watt 1×12 tube combo with Normal and Fat (boosted) modes, treble/bass/middle, Master and spring reverb. Three 12AX7s drive a push-pull pair of EL84s. It breaks up easily at moderate volume and is one of the most popular small gigging and practice tube amps.

Years produced: 1995–2010
Wattage: 15W
Channels: 1
Preamp tubes: 3× 12AX7
Power tubes: 2× EL84

Tags: el84, reverb, breakup, clean, low-wattage.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.