Laney PT30 Series II preset

verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Laney PT30 Series II is a 1989 British all-valve head built around a pair of 6V6GTs. High and low inputs feed a Preamp Gain control and cascaded ECC83 stages with a cathode follower, then a treble, middle and bass stack with Mid Boost, Treble Boost and a JFET-switched Bass Boost, and a master volume. An op-amp effects loop, an ECC83 long-tailed-pair inverter with Presence, adjustable fixed bias and a DI output round it out.

• Made in: UK
• Wattage: 30W
• Channels: 1
• Preamp tubes: 4× ECC83
• Power tubes: 2× 6V6GT

Tags: british, mid-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.