Unknown November preset

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

The November is a DIY 18-watt-style EL84 head. One input splits into two 12AX7 stages, a bright one and a dark one, each with its own volume, which blend into a further gain stage and a cathode follower driving a treble/middle/bass stack and master volume. A preamp-out/power-amp-in loop follows. A 12AX7 long-tail inverter with switchable negative feedback and presence drives two EL84s with a cathode/fixed bias switch, from a 5Y3 rectifier with DC-elevated heaters.

• Wattage: 18W
• Channels: 1
• Preamp tubes: 3× 12AX7
• Power tubes: 2× EL84

Tags: 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.