Diezel Herbert - Lead preset

Close · 60/100 confidence. Most values readable. Minor gaps filled by inference from similar circuits.

The Diezel Herbert is a three-channel, 180-watt German-made amplifier widely regarded as one of the finest high-gain amps ever built, renowned for its extraordinary harmonic complexity, articulate low end, and massive headroom. Designed by Peter Diezel and released in the mid-1990s, it set the benchmark for boutique high-gain amplifiers with its ability to cover a huge tonal range from sparkling clean to searing lead tones. It has been a staple of professional touring rigs in metal, prog, and hard rock for three decades.

• Years produced: 1994–present
• Made in: Germany
• Wattage: 180W
• Channels: 3
• Preamp tubes: 5× 12AX7
• Power tubes: 6× EL34

Known for: Mikael Åkerfeldt, John Petrucci, Periphery.

Tags: german, high-gain, modern.

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.