ZVex Woolly Mammoth Settings Guide
The ZVex Woolly Mammoth is a silicon fuzz pedal originally designed for bass guitar but equally effective on guitar — its extended low-end response and massive saturation produce a dense, compressed fuzz that suits heavy, slow, bass-heavy music. Compared to the Fuzz Factory (also by ZVex), the Woolly Mammoth is more straightforward and musical — extreme fuzz without the instability and self-oscillation capabilities of the Factory. A favourite in stoner, doom, and experimental metal.
The best ZVex Woolly Mammoth settings start with: Volume at 7/10, Pinch at 5/10, Wool at 7/10, EQ at 5/10. Adjust from there based on your amp, guitar, and room volume. For Stoner / Doom: Volume 7/10, Pinch 3/10, Wool 9/10, EQ 4/10.
⚡ Start Here — Recommended Settings
| Control | Starting Position | Range |
|---|---|---|
| Volume | 7/10 | Off → Loud |
| Pinch | 5/10 | Open → Tight |
| Wool | 7/10 | Light → Heavy |
| EQ | 5/10 | Dark → Bright |
These are universal starting points. Adjust based on your amp, guitar, and room. Scroll down for genre-specific settings and artist-documented positions.
What Each Control Does
Recommended Starting Settings
Safe starting positions for any style. Adjust from here based on your amp and room.
All values on a 0–10 scale. These are starting points — fine-tune by ear.
Settings by Genre
Low Pinch for maximum low-end bloom, maximum Wool for total saturation — the dense, heavy fuzz texture that defines stoner and doom guitar. EQ at 4 is slightly dark, matching the genre aesthetic. Into a down-tuned setup, the Woolly Mammoth's extended low end adds weight without muddiness.
Higher Pinch for tighter, more controlled fuzz — the Woolly Mammoth with Pinch elevated is significantly more articulate. At Pinch 7 the low end is firm enough for experimental playing where note definition matters within saturation.
Moderate Pinch with high Wool for heavy psychedelic fuzz. The extended frequency range of the Woolly Mammoth suits the low, heavy, riff-based approach of heavy psych where standard guitar fuzzes lose low-end girth.
Minimum Pinch and maximum Wool produce the loosest, heaviest possible fuzz character, with a dark EQ setting keeping the tone thick rather than harsh at this much saturation.
A moderate, balanced setting suits the pedal original design purpose on bass guitar, where excessive low end can quickly become an undefined rumble rather than a useful fuzz texture.
Tips & Common Mistakes
- The Woolly Mammoth was designed for bass guitar first — its exceptional low-frequency extension compared to standard guitar fuzzes makes it more effective on guitar at lower tunings and heavier string gauges. Players using lighter strings or standard tuning may find the low end overwhelming; Pinch control should be set higher in those cases.
- Like all ZVex Vexter series pedals, the screen-printed graphics version uses the same circuit as the hand-painted version at a lower price — the circuit is identical.
- Compared to the ZVex Fuzz Factory, the Woolly Mammoth is deliberately more stable and musical — it does not self-oscillate or require the constant micro-adjustment the Fuzz Factory is known for.
- At extreme Wool settings, guitar volume-knob cleanup becomes less effective than on a lower-gain fuzz — expect the pedal to stay heavily saturated across most of the guitar volume range rather than cleaning up gradually.
- Because the low-end response is so extended, running this pedal into a smaller combo amp or speaker not rated for that much bass content can produce speaker breakup that is unpleasant rather than musical — a larger cabinet handles it more gracefully.
FAQ
ZVex Woolly Mammoth — Common Questions
Best starting settings for ZVex Woolly Mammoth: Volume at 7/10, Pinch at 5/10, Wool at 7/10, EQ at 5/10. Adjust from there based on your guitar, room, and playing style.
For Stoner / Doom: Volume 7/10, Pinch 3/10, Wool 9/10, EQ 4/10. Low Pinch for maximum low-end bloom, maximum Wool for total saturation — the dense, heavy fuzz texture that defines stoner and doom guitar. EQ at 4 is slightly dark, matching the genre aesthetic. Into a down-tuned setup, the Woolly Mammoth's extended low end adds weight without muddiness.
For Experimental: Volume 7/10, Pinch 7/10, Wool 8/10, EQ 5/10. Higher Pinch for tighter, more controlled fuzz — the Woolly Mammoth with Pinch elevated is significantly more articulate. At Pinch 7 the low end is firm enough for experimental playing where note definition matters within saturation.
Volume: Output volume (Off to Loud). Pinch: Low-frequency content — higher values tighten the low end; lower values produce a looser, more open fuzz (Open to Tight). Wool: Fuzz saturation amount (Light to Heavy). EQ: Post-fuzz tone / EQ balance (Dark to Bright)
The Woolly Mammoth was designed for bass guitar first — its exceptional low-frequency extension compared to standard guitar fuzzes makes it more effective on guitar at lower tunings and heavier string gauges. Players using lighter strings or standard tuning may find the low end overwhelming; Pinch control should be set higher in those cases. Like all ZVex Vexter series pedals, the screen-printed graphics version uses the same circuit as the hand-painted version at a lower price — the circuit is identical. Compared to the ZVex Fuzz Factory, the Woolly Mammoth is deliberately more stable and musical — it does not self-oscillate or require the constant micro-adjustment the Fuzz Factory is known for. At extreme Wool settings, guitar volume-knob cleanup becomes less effective than on a lower-gain fuzz — expect the pedal to stay heavily saturated across most of the guitar volume range rather than cleaning up gradually. Because the low-end response is so extended, running this pedal into a smaller combo amp or speaker not rated for that much bass content can produce speaker breakup that is unpleasant rather than musical — a larger cabinet handles it more gracefully.
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