Tone library / Metallica / Master of puppets

Master of puppets amp settings — Gear for music 3

The Metallica guitar tone for “Master of puppets”, dialed in for a Gear for music 3 with a Gear for music New jersey. Studio version, Master of Puppets (1986), tracked September–December 1985 at Sweet Silence Studios, Copenhagen

Original rig

Mesa Boogie Mark IIC+ into Marshall JCM800 power amp, Marshall 4x12 w/ Celestion G12T-75s, Jackson King V w/ Seymour Duncan Invaders (bridge)

Tight, aggressive thrash rhythm with scooped mids, percussive palm-muted attack, and cutting high-end presence

Amp settings — Gear for music 3

CHANNELHigh-gain / Lead channel (select closest Mesa or Marshall model if available)BRIGHToffBOOSTon

Knob	Setting (0–10)
Gain	7
Bass	6
Mid	2
Treble	7
Presence	6
Reverb	0
Master	6

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01Noise Gate (GP100 built-in or equivalent)

Essential for tight palm-muted stops; place first in chain before any gain

Threshold 5 · Decay 3

02Graphic EQ (GP100 built-in — critical for this tone)

The 'V-shape' is non-negotiable for this tone — 750Hz scooped hard, bass and upper-mids boosted. Place in FX loop if GP100 allows, or post-preamp in signal chain

80Hz 7 · 240Hz 4 · 750Hz 0 · 2200Hz 7 · 6600Hz 6

Why these settings

Your Gear for Music 3 amp and New Jersey guitar are unverified models, so I've given universal high-gain settings. The original Mark IIC+ has a tighter low-end and more aggressive upper-mid cut than most amps — the graphic EQ 'V-shape' on your GP100 is mandatory to replicate this. Without it, the tone will sound muddy and undefined. If your amp has a 'modern' or 'tight' voicing option, use it; if it's more Marshall-voiced, drop bass to 5 and raise mids to 3.

PRO TIPHetfield's attack is all downstrokes with the pick angled slightly toward the bridge — this creates the percussive 'chunk' that defines the riff. Practice the main riff at 80% tempo with strict downpicking before speeding up; alternate picking will kill the tone's aggression regardless of settings.

Get this tone on your amp

These settings are for a Gear for music 3. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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Song, artist and gear names are used to identify the tone being matched; ToneAdapt is not affiliated with or endorsed by the artists or manufacturers mentioned. Settings are AI-generated starting points — trust your ears.