Bogner Überschall - Overdrive preset

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

The Überschall is Bogner's dedicated extreme-gain head, with a tight, heavily saturated overdrive channel aimed at modern metal and a simpler clean channel. Four EL34s in class AB push-pull provide the power, with presence control and a solid-state rectifier.

• Made in: USA
• Wattage: 120W
• Channels: 2
• Preamp tubes: 6× 12AX7
• Power tubes: 4× EL34

Known for: Jim Root, Mark Tremonti.

Heard on: Before I Forget — Slipknot (2004); Overcome — Creed (2009).

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