What tubes does the Fender Blues Junior use?

The Fender Blues Junior uses 3× 12AX7 preamp tubes and 1× EL84 power tubes.

When was the Fender Blues Junior produced?

The Fender Blues Junior was produced 1995–present.

Fender Blues Junior preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Blues Junior is a 15-watt 1×12 combo and one of Fender's most popular modern tube amps. Running a single EL84 power tube — unusual for Fender — it delivers warm, slightly Vox-influenced character alongside classic American voiced EQ, breaking up at comfortable rehearsal volumes with onboard spring reverb.

Years produced: 1995–present
Made in: USA
Wattage: 15W
Channels: 1
Preamp tubes: 3× 12AX7
Power tubes: 1× EL84

Tags: american, clean, breakup, reverb, modern.

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.