Yamaha G20-110 III / G50-112 III - Clean preset

Close · 68/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The G20-110 III and G50-112 III are solid-state Yamaha Series III guitar combos, a 1x10 and a 1x12 built on one circuit. Channel A has its own Volume; Channel B adds Gain and a Master Volume, and both use a Treble, Middle and Bass stack with a pull Mid Boost. A parametric EQ with Level and Frequency, Presence, spring reverb, A/B and EQ footswitching, preamp out/power amp in, headphone and direct outputs round it out.

• Made in: Japan
• Channels: 2

Tags: japanese, solid-state, 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.