FM3/FM9/AXE-FX III Patch inspired by the Diezel Herbert

FM3/FM9/AXE-FX III Patch inspired by the Diezel Herbert

Originally crafted by German designer Peter Diezel, the Herbert is more than an amplifier; it’s a tone sculptor designed for guitarists who demand both nuance and force.

At the heart of the Diezel Herbert is a colossal 180-watt output powered by six KT77 tubes. This beast is not only loud but also articulate. What sets the Herbert apart is its flexibility—you can use other power tube types like EL34, 6L6, KT66, or even mix different pairs, thanks to an innovative biasing system for each pair of tubes. It’s a thoughtful design choice that gives players more tonal variety than most amps on the market.

The preamp section houses five 12AX7 tubes, helping deliver clarity and definition across all tonal ranges. Whether you're looking for clean, warm tones or aggressive distortion, the Herbert is built to handle it all with ease.

A standout feature of the Herbert is the Mid-Cut function, which allows players to dramatically shape the amp’s midrange character. Unlike many amps that offer a fixed scooped-mid sound, the Herbert lets you adjust the intensity and volume of the mid cut and assign it to any channel. This opens up an entirely new layer of tonal flexibility—whether you're looking for a modern, aggressive sound or something more vintage and mid-focused.

Dual master volumes allow for on-the-fly switching between two volume levels—perfect for solo boosts during live performances. Additional controls for Presence and Deep let you fine-tune the amp’s high-end bite and low-end punch, ensuring it sounds incredible with any speaker cabinet.

Guitarists who use the Herbert often describe it as a "tank"—not just for its rugged construction, but for the way it dominates a mix. The clean channel has been compared to high-end boutique amps, while the high-gain channel is often praised for its articulation and tight response, even under extreme distortion.

While it’s not a budget amp by any means, most agree that the Herbert offers unmatched performance for its price. It’s a professional-grade tool made for serious players. At gymtar, we did our best to get the best inspiration from this masterpiece. Have a try today!

Scene 1: CH2+
Scene 2: CH2-
Scene 3: CH3

Effects : wah, phaser, delay, reverb