Orange OR100 preset

Close · 76/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Orange OR100 is a 100-watt single-channel head from Orange's Graphic-era lineage. Two inputs feed a six-position Depth capacitor selector and a Studio/Stage switch ahead of an ECC83 input stage and a Volume control, then a second gain stage and a passive bass and treble network. A series send/return loop follows, then an ECC83 stage with a Boost control and feedback, direct-coupled to a cathodyne phase inverter driving four fixed-bias EL34s.

• Made in: UK
• Wattage: 100W
• Channels: 1
• Preamp tubes: 2× ECC83
• Power tubes: 4× EL34

Tags: british, 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.