Western Electric 140A preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Western Electric 140A is a vintage tube amplifier with an AC/DC power supply: a 6SL7 serves as input and driver, feeding four 25L6 beam tetrodes in parallel push-pull, rectified by two 25Z6s. Its transformerless-supply design reflects its role as a compact utility amplifier rather than a musical-instrument amp.

Tags: american, vintage, clean.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.