Rikstone C50 - Brilliant preset

Verified · 87/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Rikstone C50 is a small-builder two-channel EL34 head in the Marshall mould, with Normal and Brilliant channels. Each has its own Gain, a 12AX7 gain stage and cathode follower, and its own Treble and Bass; the Brilliant channel adds bright capacitors. The channels mix into a series effects loop and a Master Volume ahead of a 12AX7 long-tail phase inverter and two fixed-bias EL34s. Silicon rectifier, no negative feedback loop.

• Made in: Finland
• Channels: 2
• Preamp tubes: 4× 12AX7
• Power tubes: 2× EL34

Tags: modern, 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.