What tubes does the Vox Ac4 use?

The Vox Ac4 uses 1× 12AX7 preamp tubes and 1× EL84 power tubes.

When was the Vox Ac4 produced?

The Vox Ac4 was produced 1961–present.

Vox Ac4 preset

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

The AC4 is Vox's smallest all-tube amplifier — a single-channel 4-watt design using one EL84 power tube. Originally introduced as a practice and domestic amp, it delivers genuine Vox EL84 chime and breakup at bedroom-friendly volumes. The AC4TV and AC4TVH are modern continuations of this design.

Years produced: 1961–present
Made in: UK
Wattage: 4W
Channels: 1
Preamp tubes: 1× 12AX7
Power tubes: 1× EL84

Tags: british, low-wattage, el84, chime, practice.

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.