Western Electric 142A preset

Verified · 86/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Western Electric 142A is a vintage tube power amplifier using a 6SN7 driver and a push-pull pair of 350B beam tetrodes (6L6 types also specified), with a 5R4GY rectifier. Rated at roughly 25 watts in its higher-output configuration, it is prized for its quality transformers and clean, robust audio design.

• Made in: USA
• Wattage: 25W
• Channels: 1
• Preamp tubes: 6SN7
• Power tubes: 2× 350B

Tags: american, vintage, clean, power-amp.

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.