Watkins Westminster (1958) - Channel 2 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The 1958 Westminster is one of the earliest Watkins amplifiers, a small valve combo hand-drawn in June 1958. Two inputs each feed their own half of a 12AX7, each with its own volume control, mixing into a Tone control. A second 12AX7 serves as gain stage and phase inverter, driving a push-pull pair of 6BW6 beam tetrodes into a single speaker, with an EZ81 valve rectifier.

• Made in: UK
• Wattage: 10W
• Channels: 2
• Preamp tubes: 2× 12AX7
• Power tubes: 2× 6BW6

Tags: british, vintage, two-channel.

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.