Orange Graphic MkII OR120 preset

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

The Orange OR120 with graphic equaliser was the flagship of Orange's early 1970s range — 120 watts of EL34 power with a large graphic EQ section that gave players tonal control unavailable on the simpler Marshall and Hiwatt designs of the period. Its output stage compresses and blooms in a characteristically Orange way: thick, harmonically dense, and immediate in attack, with a midrange presence that pushes through any mix. Geddy Lee's foundational Rush recordings, Steve Howe's layered Yes guitar parts, and Paul Kossoff's aching Free lead work all ran through Orange stacks of this era. Jimmy Page is documented using Orange amplifiers in the studio, and the OR120's combination of raw power and tonal flexibility made it one of the definitive voices of 1970s British hard rock.

Known for: Geddy Lee (Rush), Steve Howe (Yes), Paul Kossoff (Free), Peter Green (Fleetwood Mac), Jimmy Page.

Heard on: 2112 — Rush (1976); Roundabout — Yes (1971); All Right Now — Free (1970).

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.