Ampeg Echo Jet EJ-12A preset

Verified · 91/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg Echo Jet EJ-12-A is a guitar combo with a built-in Type F echo unit on a footswitch. A 6D10 compactron handles the preamp and a push-pull pair of 7591As drives the speaker, with a 5Y3GT rectifier and a volume and tone control.

• Made in: USA
• Channels: 1
• Preamp tubes: 1× 6D10
• Power tubes: 2× 7591A

Tags: american, vintage, reverb.

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.