Magnatone M-197-3-V - Normal preset

Verified · 95/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Magnatone M-197 is a vintage American tube amplifier notable for Magnatone's patented varistor-based true vibrato circuit, which creates a pitch-shifting effect distinct from the tremolo found on other amps. Magnatone's unique vibrato made these amps prized by blues and early rock and roll players.

• 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.