Martin 112 - Channel 1 preset

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

The Martin 112 is a small valve combo sold by C.F. Martin to go with its electric guitars. Each of its two channels has its own triode of a 12AY7, followed by a single tone control and a 12AX7 gain stage with a cathodyne phase-inverter module driving two cathode-biased 6V6s from a 5Y3 rectifier.

• Made in: USA
• Wattage: 12W
• Channels: 2
• Preamp tubes: 1× 12AY7, 1× 12AX7
• Power tubes: 2× 6V6

Tags: american, vintage, clean, 6v6, low-wattage, 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.