Vox AC15 (1960) - Normal preset

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

The 1960 AC15 (Circuit No. 3) has two channels. The Normal channel runs an EF86 pentode with a Brilliance switch and its own Volume; the Vib/Trem channel uses a 12AX7 with its own Volume, plus a 12AX7 oscillator and 12AU7 modulator (Speed, Depth preset, footswitch). A Cut control sits at a 12AX7 long-tailed pair driving two EL84s with no feedback, on an EZ81 rectifier. The drawing also marks the AC15 Bass values.

• Introduced: 1958
• Made in: UK
• Wattage: 15W
• Channels: 2
• Preamp tubes: 1× EF86, 3× 12AX7, 1× 12AU7
• Power tubes: 2× EL84

Tags: british, vintage, el84, class-a, tremolo, two-channel, low-wattage.

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.