Vox Supertwin preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Supertwin is a solid-state Vox from the Rose Morris era, drawn in 1981. It is unrelated to the Fender Super Twin. Normal and Brilliant inputs feed an RC4136 quad op-amp preamp with a 1M Volume, Bass and Treble controls and a Hammond spring reverb with its own Reverb level. A single-rail discrete power stage with BD537 output transistors drives two 8-ohm speakers through an output capacitor.

• Made in: UK
• Channels: 1

Tags: british, solid-state, reverb.

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.