The KMA Machines Wurm MK2 HM-2 Style Distortion is a compact high-gain distortion pedal in the HM-2 style. Guitar Pedal X listed it in its roundup of compact high-gain and heavy metal pedals, at a price of $1991.
What it does
The Wurm MK2's control set covers the essentials and then goes well beyond them1:
| Control | What it does |
|---|---|
| Volume | Output level |
| Voicing | Three-position switch: HM II / Both / KMA |
| Terror | Distortion control |
| Highs | High EQ band |
| Hi-Mids | High-mid EQ band |
| Low-Mids | Low-mid EQ band |
| Lows | Low EQ band |
| Internal trimmers | Frequency trimmers for Lows, Low Mids, High Mids and Highs |
The Voicing switch selects between the classic HM II voicing, the KMA voicing, or both together. The four-band EQ is semi-parametric, and inside the pedal four frequency trimmers let a player set the center frequencies of the Lows, Low Mids, High Mids and Highs bands, so the EQ can be tuned to the amp and guitar rather than left at fixed points1.
What reviewers said
Guitar Pedal X summed up the pedal's sound as "Just hugely potent!", with the resulting tones described as really top-tier1.
Sources (1)
- Guitar Pedal X, Guitar Pedal X, 2025-11-27






