What tubes does the Vox Ac50 use?

The Vox Ac50 uses 3× ECC83 preamp tubes and 2× EL34 power tubes.

When was the Vox Ac50 produced?

The Vox Ac50 was produced 1964–1967.

Who famously used the Vox Ac50?

The Beatles, and Jimmy Page are among the notable players associated with the Vox Ac50.

Vox Ac50 preset

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

The Vox AC50 is a 50-watt head introduced in 1964, designed for larger venues than the AC30 could fill. Unlike the AC30's cathode-biased EL84 output stage, the AC50 uses fixed-bias EL34 power tubes, producing a tighter, more aggressive British tone with greater clean headroom. It was used by The Beatles on the 1965–1966 world tours and by Jimmy Page in his pre-Zeppelin work. Two channels — Normal and Brilliant — are provided.

Years produced: 1964–1967
Made in: UK
Wattage: 50W
Channels: 2
Preamp tubes: 3× ECC83
Power tubes: 2× EL34

Known for: The Beatles, Jimmy Page.

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.