What tubes does the Diezel Dz4 Preamp Aionfx use?

The Diezel Dz4 Preamp Aionfx uses 4× 12AX7 preamp tubes.

When was the Diezel Dz4 Preamp Aionfx produced?

The Diezel Dz4 Preamp Aionfx was produced 2010s.

Diezel Dz4 Preamp Aionfx preset

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

The Diezel DZ4 is a four-channel preamp unit derived from the legendary VH4 amplifier circuit, offering the same high-gain architecture in a standalone preamp format. It delivers the signature Diezel tight low end and complex harmonic saturation across all four channels, from clean to extreme high gain. A favorite among touring metal and rock guitarists who require the Diezel sound in a rack-based rig.

Years produced: 2010s
Made in: Germany
Channels: 4
Preamp tubes: 4× 12AX7

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.