What tubes does the Ampeg V9Preamp 1 use?

The Ampeg V9Preamp 1 uses 4× 12AX7 preamp tubes.

When was the Ampeg V9Preamp 1 produced?

The Ampeg V9Preamp 1 was produced 1975–1982.

Ampeg V9Preamp 1 preset

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

Additional V-9 preamp documentation providing an alternate or supplementary schematic representation. The V-9's preamp section features two channels with full tone controls designed to drive the enormous eight-tube output stage to its full potential for professional PA and instrument amplification.

Years produced: 1975–1982
Made in: USA
Channels: 2
Preamp tubes: 4× 12AX7

Tags: american, vintage, 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.