Tone library / Metallica / Master of Puppets

Master of Puppets amp settings — LINE 6 Spider IV 75

The Metallica guitar tone for “Master of Puppets”, dialed in for a LINE 6 Spider IV 75 with a PRS SE Mikael Akerfeldt. Studio version, Master of Puppets (1986)

Original rig

Jackson King V 'Kill Bon Jovi' with EMG 81/60 → Mesa/Boogie Mark IIC+ (preamp) → Marshall JCM800 (power amp) → Marshall 4x12. Ibanez TS-808 used as a clean boost in front.

Tight, scooped-mid thrash rhythm with razor-sharp pick attack, crushing palm mutes, and defined low end
Amp settings — LINE 6 Spider IV 75
CHANNELInsane
GAIN 7 BASS 7 MID 3 TREBLE 7 PRESENCE 6 REVERB 0 MASTER 5
KnobSetting (0–10)
Gain7
Bass7
Mid3
Treble7
Presence6
Reverb0
Master5
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Guitar
PICKUPbridge TONE10 VOLUME10
Signal chain

01Tube Screamer (TS9 or TS808)

RECOMMENDED — not currently owned. This is critical to the Hetfield tone: drive near zero, level cranked. It tightens the low end and adds pick attack definition. Without it, the Spider's Insane channel will sound loose and fizzy. A Maxon OD808, Boss SD-1, or any TS clone works.

Drive 1 · Tone 5 · Level 8
Why these settings

The Spider IV's Insane channel is a high-gain modern voicing — closer to a Rectifier than a Mark IIC+. To compensate: mid at 3 recreates the scooped V-curve, but not as aggressively as the original (Spider mids are already scooped by design). Gain at 7 instead of 8 because the Insane channel runs hotter than the Mark IIC+ lead channel. Bass at 7 gives the thump, but without a TS in front, palm mutes will lack definition.

PRO TIPHetfield's tone is 50% technique: strict downpicking, palm muting right at the bridge saddles, and picking hard with the thick part of the pick. Practice the main riff with all downstrokes at 212 BPM before tweaking knobs — sloppy alternate picking will never sound like this record.

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These settings are for a LINE 6 Spider IV 75. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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