What tubes does the Ampeg Vt22 V4 74 use?

The Ampeg Vt22 V4 74 uses 4× 12AX7 preamp tubes and 4× 6L6 power tubes.

When was the Ampeg Vt22 V4 74 produced?

The Ampeg Vt22 V4 74 was produced 1974–1976.

Ampeg Vt22 V4 74 preset

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

The VT22/V4 1974 schematic documents the mid-production revision of Ampeg's 100-watt amplifier family. By 1974, the design had been refined through several revisions, with improved reliability and refined tone shaping. This represents a common and well-developed version of the circuit.

Years produced: 1974–1976
Made in: USA
Wattage: 100W
Channels: 2
Preamp tubes: 4× 12AX7
Power tubes: 4× 6L6

Tags: american, vintage, mid-wattage.

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.