Orange Graphic MkII 120 preset

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

The Orange Graphic 120 is a circa-120-watt amplifier from Orange's golden era, distinguished by its large built-in graphic equaliser that gave players fine-grained control over the amp's inherently warm and harmonically dense voice. Four EL34 output tubes deliver a thick, compressed midrange with an imposing low end that became the defining sonic character of early 1970s British rock. The graphic EQ section made the amp unusually versatile for its era, allowing the Orange's characteristic saturated tone to be sculpted for everything from stadium rock to early progressive textures.

• Years produced: 1972–1978
• Made in: UK
• Wattage: 120W
• Channels: 1
• Preamp tubes: 4× ECC83 (12AX7)
• Power tubes: 4× EL34

Known for: Geddy Lee, Jimmy Page.

Heard on: Working Man — Rush (1974).

Tags: british, crunch, vintage.

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.