Vox AC30 Limited Edition (1990) - Vib/Trem preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 30th Anniversary Limited Edition AC30 of 1990 was a numbered run of 1,000 amps built in England to recall the 1960 original, with a red control panel and brown diamond grille. It has Normal, Brilliant and Vib/Trem channels, the Brilliant with Top Boost treble and bass on an ECC81, and no reverb. Four EL84s run without negative feedback from a diode bridge with a choke, on a single circuit board with DC preamp heaters.

• Years produced: 1990–1991
• Made in: UK
• Wattage: 30W
• Channels: 3
• Preamp tubes: 4× ECC83, 1× ECC82, 1× ECC81
• Power tubes: 4× EL84

Tags: british, el84, class-a, chime, multi-channel.

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.