Bogner Shiva preset

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

The Bogner Shiva is an 80-watt two-channel boutique head designed by Reinhold Bogner. Clean and overdrive channels run through EL34 output tubes, producing the Bogner hallmark of harmonically complex, three-dimensional tone that bridges American and British character.

• Years produced: 1999–present
• Made in: USA
• Wattage: 80W
• Channels: 2
• Preamp tubes: 5× ECC83
• Power tubes: 4× EL34

Known for: Warren DeMartini, Steve Stevens.

Tags: american, boutique, el34, two-channel, high-gain.

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.