What tubes does the Bogner Shiva - Lead use?

The Bogner Shiva - Lead uses 4× 12AX7 preamp tubes.

Who famously used the Bogner Shiva - Lead?

Rick Springfield are among the notable players associated with the Bogner Shiva - Lead.

What recordings feature the Bogner Shiva - Lead?

You Waste Your Time by Tremonti (2012).

Bogner Shiva - Lead preset

Verified · 82/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Shiva is Bogner's two-channel head and combo. The Clean channel is a single 12AX7 stage with treble, bass and volume; the Lead channel adds gain and three cascaded 12AX7 stages into treble, bass, mid and its own volume, with optocoupler channel switching. A buffered series effects loop and master volume feed a 12AX7 long-tail phase inverter with presence, driving a push-pull pair of fixed-bias output valves with negative feedback.

Made in: USA
Wattage: 80W
Channels: 2
Preamp tubes: 4× 12AX7

Known for: Rick Springfield.

Heard on: You Waste Your Time — Tremonti (2012).

Tags: american, boutique, el34, two-channel, crunch, 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.