What tubes does the Ampeg V 9 1 use?

The Ampeg V 9 1 uses 4× 12AX7 preamp tubes and 8× 6550 power tubes.

When was the Ampeg V 9 1 produced?

The Ampeg V 9 1 was produced 1975–1982.

Ampeg V 9 1 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

V-9 amplifier schematic variant 1, documenting Ampeg's flagship PA tube amplifier. Eight 6550 output tubes producing 300 watts make the V-9 an impressive achievement in tube amplifier engineering. This schematic provides essential circuit details for technicians working on these rare and powerful amplifiers.

Years produced: 1975–1982
Made in: USA
Wattage: 300W
Channels: 2
Preamp tubes: 4× 12AX7
Power tubes: 8× 6550

Tags: american, vintage, high-wattage, pa.

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.