Vox AC30 Top Boost 1986 - Brilliant preset
Verified · 84/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.
The 1986 Vox AC30 schematic reflects the Rose-Morris era of production, when Vox had been acquired by Korg and manufacturing was transitioning toward more consistent quality control. This circuit is functionally similar to classic AC30 topology — four cathode-biased EL84s, two channels including Top Boost — but includes revised PCB layout and some component substitutions compared to original hand-wired JMI versions.
- Years produced: 1985–1989
- 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.