Ampeg V4 / VT22 - Channel 1 preset

Close · 78/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Ampeg V-4 was a 100-watt all-tube guitar head introduced around 1971, using four 6L6GC output tubes and a comprehensive preamp with tremolo and reverb — making it one of the most full-featured guitar amplifiers Ampeg ever produced. The VT-22 was the companion 2×12 combo version of the same circuit, integrating the V-4 head into an open-back cabinet. Both the V-4 and VT-22 are prized for their warm, thick tube tone and are particularly beloved by blues and classic rock guitarists who find them an alternative to Fender and Marshall offerings of the same era.

• Years produced: 1971–1980
• Made in: USA
• Wattage: 100W
• Channels: 2
• Preamp tubes: 5× 12AX7
• Power tubes: 4× 6L6GC

Known for: Dave Edmunds.

Tags: american.

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.