Orange OTR 80/120 preset

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

The Orange OR120 (OTR 120) is a 120-watt single-channel British powerhouse from the early 1970s. It features a graphic EQ in place of a traditional tonestack and produces the thick, compressed Orange tone associated with classic British rock.

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

Known for: Rory Gallagher, Paul Kossoff.

Tags: british, vintage, graphic-eq, high-wattage.

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.