Ampeg Mercury M-12 - Instrument preset

Verified · 83/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Ampeg Mercury M-12 (6V6 version) is a two-channel guitar/accordion combo with Instrument and Accordion inputs, each with volume and tone. 6SL7 preamp and phase inverter stages drive a push-pull pair of 6V6s off a 5Y3 rectifier, with a 6SL7 tremolo.

• Made in: USA
• Wattage: 14W
• Channels: 2
• Preamp tubes: 3× 6SL7
• Power tubes: 2× 6V6

Tags: american, vintage, 6v6, tremolo, two-channel, low-wattage.

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.