What tubes does the Laney GH100TI use?

The Laney GH100TI uses 4× ECC83 preamp tubes and 4× EL34 power tubes.

Who famously used the Laney GH100TI?

Tony Iommi are among the notable players associated with the Laney GH100TI.

Laney GH100TI preset

Verified · 91/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Laney GH100TI is Tony Iommi's first signature amp, a 100-watt single-channel head that grew out of Laney's GH100S and took his initials in 1998. High and low inputs feed gain with a bright switch, treble, middle and bass, and a master, and the four-EL34 power amp has presence and resonance controls. A series, parallel or side-chain effects loop and a slave out round it out. Iommi used it on the biggest stages with Black Sabbath and later Heaven & Hell.

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

Known for: Tony Iommi.

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