Vox Ac30 Poweramp preset

Verified · 85/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The AC30 power amp section uses four EL84 tubes running in Class A, producing the amp's signature soft compression, harmonic bloom, and chimey upper-mid character. This schematic covers the power amplifier stage of one of the most influential British amplifiers ever made.

• Years produced: 1959–present
• Made in: UK
• Wattage: 30W
• Channels: 2
• Preamp tubes: 3× ECC83
• Power tubes: 4× EL84

Known for: The Beatles, The Edge, Brian May, Tom Petty, Radiohead.

Heard on: I Feel Fine — The Beatles (1964); Where The Streets Have No Name — The Edge (1987).

Tags: british, el84, chime, class-a, clean, jangle.

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.