What tubes does the Orange Graphic MkII (1974) use?

The Orange Graphic MkII (1974) uses 2× ECC83 preamp tubes and 4× EL34 power tubes.

When was the Orange Graphic MkII (1974) produced?

The Orange Graphic MkII (1974) was produced 1974.

Orange Graphic MkII (1974) preset

Verified · 88/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

This is the January 1974 version of the 120-watt Graphic Mk II from the Pics & Text era, when text labels joined the pictograms on the front panel. Two inputs feed an ECC83 stage, then Bass, Treble and Volume, a second gain stage and the six-position FAC contour switch. Echo send/return and slave out follow, then an ECC83 stage with a Boost control and a cathodyne inverter driving four fixed-bias EL34s from a solid-state supply. The 80-watt version uses two EL34s.

Years produced: 1974
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 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.