Laney GH100L preset

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

The Laney GH100L is a mid-1990s 100-watt all-tube British head with four EL34s, the platform Laney later used for Tony Iommi's GH100TI. High and low inputs feed an ECC83 stage, then a footswitchable relay picks a Gain path or a Drive path with an extra cascaded stage, before shared gain stages, treble, middle and bass and one master. An op-amp effects loop, slave out, presence and resonance round it out.

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

Tags: british, el34, high-gain, high-wattage, metal.

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.