What tubes does the Ampeg EJ-12 Echo Jet - Normal use?

The Ampeg EJ-12 Echo Jet - Normal uses 3× 12AX7 preamp tubes and 2× 6V6 power tubes.

When was the Ampeg EJ-12 Echo Jet - Normal produced?

The Ampeg EJ-12 Echo Jet - Normal was produced 1962–1965.

Ampeg EJ-12 Echo Jet - Normal preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg EJ-12 Echo Jet was a compact guitar combo from the early 1960s with a built-in electronic echo effect — an unusual and progressive feature for the era. The Jet series were Ampeg's small-format guitar combos, and the Echo Jet variant added the appeal of onboard echo/reverb to the package. Delivering modest wattage through a 12-inch speaker, the EJ-12 offered clean to slightly broken-up American tone with the vintage tonal character of 6V6 power tubes.

Years produced: 1962–1965
Made in: USA
Wattage: 15W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× 6V6

Tags: american, vintage, clean.

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.