What tubes does the Ampeg J-12R Reverb Jet - Bright use?

The Ampeg J-12R Reverb Jet - Bright uses 3× 12AX7 preamp tubes and 2× 6V6 power tubes.

When was the Ampeg J-12R Reverb Jet - Bright produced?

The Ampeg J-12R Reverb Jet - Bright was produced 1963–1967.

Ampeg J-12R Reverb Jet - Bright preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg J-12R was a Jet series compact guitar combo with built-in reverb — a significant addition that greatly expanded the tonal capabilities of the small combo. By adding reverb to the Jet format, Ampeg gave players an affordable, compact solution for the reverb-drenched tones that dominated 1960s popular music. The J-12R balanced size, features, and tone in a package well suited to the working guitarist of the mid-1960s.

Years produced: 1963–1967
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.