Randall RT30 - Lead preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Randall RT30 is a 30-watt all-valve Randall combo with two relay-switched channels. Channel 1 has a Volume with a pull switch and its own Treble, Bass and Middle; Channel 2 adds a Gain control, an extra 12AX7 stage and a diode clipper, with its own Treble, Bass and Middle. Shared Presence and Master controls, an effects loop and a 12AX7 phase inverter follow, driving four cathode-biased EL84s with an output impedance selector.

• Made in: USA
• Wattage: 30W
• Channels: 2
• Power tubes: 4× EL84

Tags: american, two-channel.

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.