Rikstone C30W - Brilliant preset

Verified · 89/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Rikstone C30W is a small-builder 30-watt-class EL84 amp in the Vox AC30 mould. Its power section has a 12AX7 long-tail phase inverter with a 220K Cut control acting across the inverter outputs, driving four EL84s in cathode-biased push-pull through a shared bias network, with a power switch that changes the operating level. The output transformer has 16 ohm and 8/16 ohm outputs. Only the power-amp sheet is on file, so the preamp is not shown.

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

Tags: vintage, two-channel.

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.