Tone library / Slipknot / Duality

Duality amp settings — Marshall MG15G

The Slipknot guitar tone for “Duality”, dialed in for a Marshall MG15G with a ibanez rg421 AHM. Studio version, Vol. 3: (The Subliminal Verses) (2004)

Original rig

Peavey 5150/Rivera KR-7 (Mick Thomson), Mesa Triple Rectifier (Jim Root), Ibanez MTM1/Fender Jim Root Telecaster, Kevin Allen Octave Fuzz (intro), Maxon OD820 (boost)

Tight and percussive, scooped mids, aggressive palm muting, high-gain saturation, razor-sharp clarity, chunky rhythm tone, dry and focused
Amp settings — Marshall MG15G
CHANNELOD (Overdrive channel)
GAIN 3 BASS 4 MID 3 TREBLE 6 REVERB 0 MASTER 5
KnobSetting (0–10)
Gain3
Bass4
Mid3
Treble6
Reverb0
Master5
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Guitar
PICKUPbridge TONE8 VOLUME10
Signal chain

01MOOER GE150 — High Gain Amp Model (5150 or Rectifier sim)

Use the GE150 as your PRIMARY gain source — select the '5150' or 'Recto' amp model. Run into the MG15G's CLEAN channel or use the GE150 direct into a cab sim/headphones. The MG15G's overdrive channel cannot achieve this saturation level.

Amp Model 5150/Rect · Gain 8 · Bass 7 · Mid 4 · Treble 6 · Presence 6 · Master 7

02MOOER GE150 — Noise Gate

Essential for tight palm mutes — gate hard to kill string noise between riffs

Threshold 6 · Decay 3

03MOOER GE150 — Octave Fuzz (for intro only)

Engage only for the 'fucked up' intro riff — Mick's Kevin Allen fuzz is an octave fuzz with square wave filter

Fuzz 8 · Octave Blend 7 · Level 6
Why these settings

The MG15G's OD channel maxes out at medium-gain crunch — nowhere near 5150 saturation. Your GE150 is doing 100% of the heavy lifting here. I've set the MG15G to low gain as a clean-ish platform; if the GE150 has cab sim and headphone out, bypass the MG entirely for tighter response. Your RG421's Quantum humbuckers are hotter than Mick's DiMarzios, so I pulled GE150 gain back 1 point from the original 9.

PRO TIPTune to Drop B (B-F#-B-E-G#-C#) with at least .011-.056 strings — the low tuning is non-negotiable for Duality's chunk. Pick hard directly over the bridge pickup pole pieces for maximum attack on palm mutes.

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