What tubes does the Ampeg GV-15 - Channel 1 Bright use?

The Ampeg GV-15 - Channel 1 Bright uses 3× 12AX7 preamp tubes and 2× 6L6 power tubes.

When was the Ampeg GV-15 - Channel 1 Bright produced?

The Ampeg GV-15 - Channel 1 Bright was produced 1963–1967.

Ampeg GV-15 - Channel 1 Bright preset

Close · 74/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The GV-15 Channel 1 Bright is the treble-boosted input path of Ampeg's 15-inch Gemini guitar combo. The Bright channel adds sparkle and clarity particularly effective for single-coil pickups. An alternate schematic for the GV-15 providing additional documentation.

Years produced: 1963–1967
Made in: USA
Wattage: 25W
Channels: 2
Preamp tubes: 3× 12AX7
Power tubes: 2× 6L6

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