Vox AC15 - Normal preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The AC15 is the amp Vox started with in 1958, and this is its classic two-channel form: a Normal channel built around an EF86 pentode with a brilliance switch, and a Vib/Trem channel on ECC83s with an ECC82 modulator. A single top-cut control feeds a long-tailed pair and two cathode-biased EL84s with no negative feedback, on an EZ81 rectifier. It gives the thick, chiming Vox breakup at club volume.

• Years produced: 1958–1964
• Made in: UK
• Wattage: 15W
• Channels: 2
• Preamp tubes: 1× EF86, 3× ECC83, 1× ECC82
• Power tubes: 2× EL84

Known for: Hank Marvin, The Beatles, Vic Flick.

Heard on: Apache — The Shadows (1960); James Bond Theme — John Barry Orchestra (1962).

Tags: british, vintage, el84, chime, tremolo, two-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.