Orange Mkii 125 preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Orange 120W Graphic MK II is essentially the flagship OR120 head with a graphic equalizer tonestack. Four EL34 power tubes push 120 watts of classic British crunch, making it a staple of 1970s hard rock.

• Years produced: 1972–1979
• Made in: UK
• Wattage: 120W
• Channels: 1
• Preamp tubes: 3× ECC83
• Power tubes: 4× EL34

Known for: Rory Gallagher.

Tags: british, vintage, graphic-eq, 1970s.

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.