Magnatone M-20 - Channel 1 preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Magnatone M-20 is a mid-sized tube combo amplifier from Magnatone's California production, delivering warm American clean tones with characteristic midcentury tube character. It represents a step up in volume and headroom from the smaller M-10 within the same model family.

• Years produced: 1950s–1960s
• Made in: USA
• Channels: 1

Tags: american, vintage, clean.

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.