What tubes does the Vox AC30 Standard Issue 22/11/90 - Normal use?

The Vox AC30 Standard Issue 22/11/90 - Normal uses 3× ECC83 preamp tubes and 4× EL84 power tubes.

When was the Vox AC30 Standard Issue 22/11/90 - Normal produced?

The Vox AC30 Standard Issue 22/11/90 - Normal was produced 1990–1993.

Vox AC30 Standard Issue 22/11/90 - Normal preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 1990 Vox AC30 schematic represents the early Korg/Marshall-sourced era of AC30 production, with amps manufactured in England. The circuit is the standard AC30 topology — Normal and Top Boost channels, cathode-biased four-EL84 output section, GZ34 rectifier — with this version notable for its revised bias circuitry and improved component tolerances compared to the 1970s and early 1980s variants.

Years produced: 1990–1993
Made in: UK
Wattage: 30W
Channels: 2
Preamp tubes: 3× ECC83
Power tubes: 4× EL84

Tags: british, vintage.

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.