What tubes does the Orange OR120 Graphic (Mk II, 1973) use?

The Orange OR120 Graphic (Mk II, 1973) uses 2× ECC83 preamp tubes and 4× EL34 power tubes.

When was the Orange OR120 Graphic (Mk II, 1973) produced?

The Orange OR120 Graphic (Mk II, 1973) was produced 1973.

Orange OR120 Graphic (Mk II, 1973) preset

verified · 92/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

This is a 1973 build of the Orange Graphic Mk II, a single-channel head with Orange's pictogram 'graphic' front panel and a staple of British rock stages in the early 1970s. Two inputs feed an ECC83 stage, Bass, Treble and Volume, a second gain stage and the six-way FAC contour switch, then an ECC83 stage with a Boost control, echo send/return and slave out, and a cathodyne inverter driving four fixed-bias EL34s. The 80-watt version uses only two EL34s.

Years produced: 1973
Made in: UK
Wattage: 120W
Channels: 1
Preamp tubes: 2× ECC83
Power tubes: 4× EL34

Tags: british, vintage, crunch, el34, high-wattage.

Schematic-derived preset files for the Neural DSP Quad Cortex and 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.