Silvertone 1331 preset

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

The Silvertone 1331 (chassis 185.805) is a small Sears practice combo. Two inputs share one preamp stage with a Volume and a Tone control, feeding a single-ended 6V6GT output valve into an 8-inch 3.2-ohm speaker. A 6X5GT rectifier supplies the high voltage. It is a one-channel, two-knob design meant for students and home players.

• Made in: USA
• Wattage: 4W
• Channels: 1
• Power tubes: 1× 6V6GT

Tags: american, vintage.

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.