Silvertone 1263 - Tremolo preset

Verified · 91/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Silvertone 1263 is a two-channel tube combo of about 18 watts. One channel has two inputs into a paralleled 7025 with its own Volume and Tone; the other has two inputs into half a 7025, with its own Volume and Tone. A third 7025 provides a gain stage and split-load phase inverter for two cathode-biased 6V6s push-pull. Tremolo comes from the other half of the second 7025, with Speed, Depth and a footswitch jack. A 6CA4 rectifier and a standby switch round it out.

• Made in: USA
• Wattage: 18W
• Channels: 2
• Preamp tubes: 3× 7025
• Power tubes: 2× 6V6

Tags: american, vintage, 6v6, tremolo, 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.