What tubes does the Vox AC50 1976 - Normal use?

The Vox AC50 1976 - Normal uses 3× ECC83 preamp tubes and solid-state power tubes.

When was the Vox AC50 1976 - Normal produced?

The Vox AC50 1976 - Normal was produced 1976–1978.

Vox AC50 1976 - Normal preset

Verified · 87/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 1976 AC50 is a late-production AC50 from the JMI/Birch Stolec era, using a solid-state power section to meet cost and reliability targets of the period. It represents the transitional phase of Vox product development in the mid-1970s.

Years produced: 1976–1978
Made in: UK
Wattage: 50W
Channels: 2
Preamp tubes: 3× ECC83
Power tubes: solid-state

Tags: british, solid-state, 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.