Distorted Tone

The Grudge

TOOL

Bassprog2000s

Original Gear

BassWal MkII 4-string

AmpGallien-Krueger 2001RB (studio era), Mesa/Boogie 8x10 cabinet

PickupsDual humbuckers (Wal proprietary, multi-coil, active electronics)

Amp Settings

gain6.5

bass5.5

mid6.5

treble6.5

presence6

compression5.5

Effects & Signal Chain

eqBoss Boss GEB-7 Bass Equalizer

overdriveTech 21 Tech 21 SansAmp GT2

distortionPro Co Pro Co Turbo Rat

boostMXR MXR Micro Amp

Notes

Studio recording, 2000 (Lateralus album sessions); Justin Chancellor's main bass for this era and song

Tone Character(8)

growly midrange snarlaggressive, biting attackfuzzy, saturated upper midstight low end with punchslightly compressed sustaindistinct pick articulationharmonic-rich distortioncutting through dense mix

Difficulty

The part requires tight, aggressive pick technique, complex syncopation, and precise muting to keep the tone clear through heavy distortion and effects. The dynamic shifts and technical demands make it challenging for most bassists.

Sources

Tool's Justin Chancellor's Epic Rig: Insider Look - Premier Guitar Pro Pedalboards 2025: 17 Incredible Pro Guitarists Share - Premier Guitar

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