Diezel Vh4 Vh4S preset

Verified · 80/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Diezel VH4 is arguably the most iconic German boutique amplifier ever made, a four-channel, 100-watt powerhouse that defined the standard for modern high-gain amplification. Each of its four channels delivers a distinct voice, from pristine clean to savage high-gain, all sharing the characteristic Diezel tightness, harmonic complexity, and surgical precision. Beloved by metal and rock players worldwide, the VH4 has appeared on countless albums and tours as the ultimate high-gain benchmark.

• Years produced: 1994–present
• Made in: Germany
• Wattage: 100W
• Channels: 4
• Preamp tubes: 5× 12AX7
• Power tubes: 4× EL34

Known for: Alex Lifeson, Steve Lukather.

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.