What tubes does the Ampeg V9 Amp use?

The Ampeg V9 Amp uses 4× 12AX7 preamp tubes and 8× 6550 power tubes.

When was the Ampeg V9 Amp produced?

The Ampeg V9 Amp was produced 1975–1982.

Ampeg V9 Amp preset

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

The V-9 amplifier schematic documents the complete circuit of Ampeg's largest V-series PA amplifier. Eight 6550 output tubes deliver 300 watts of clean, authoritative power for large PA and instrument amplification applications. The V-9 represents the pinnacle of Ampeg's 1970s professional amplifier engineering.

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.