What tubes does the Ampeg Gemini VI GS-15-R - Normal use?

The Ampeg Gemini VI GS-15-R - Normal uses 3× 12AX7 preamp tubes and 2× 6L6 power tubes.

When was the Ampeg Gemini VI GS-15-R - Normal produced?

The Ampeg Gemini VI GS-15-R - Normal was produced 1965–1969.

Ampeg Gemini VI GS-15-R - Normal preset

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

The Gemini VI GS-15-R is a premium guitar combo from Ampeg's top-tier Gemini lineup featuring a 15-inch speaker and spring reverb. The Normal channel delivers the warm, full-range tone of the large speaker with Ampeg's characteristic clean 6L6 power. A sought-after vintage combo for jazz and blues guitar.

Years produced: 1965–1969
Made in: USA
Wattage: 30W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× 6L6

Tags: guitar, american, vintage, low-wattage, reverb, 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.