Tone library / Metallica / One

One amp settings — Marshall MG30CFX

The Metallica guitar tone for “One”, dialed in for a Marshall MG30CFX with a Fender Player Stratocaster. Studio version, ...And Justice for All (1988) — iconic clean intro & verses

Original rig

Roland JC-120 Jazz Chorus, ESP MX-220 with EMG 60 (neck), onboard JC-120 stereo chorus

Pristine, chorus-treated, slightly scooped high-headroom 80s clean
Amp settings — Marshall MG30CFX
CHANNELCleanBOOSToff
GAIN 2 BASS 6 MID 4 TREBLE 7 REVERB 3 MASTER 5
KnobSetting (0–10)
Gain2
Bass6
Mid4
Treble7
Reverb3
Master5
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Guitar
PICKUPneck TONE10 VOLUME10
Signal chain

01Built-in Chorus (Marshall MG30CFX FX section)

Engage the onboard Chorus modulation on the FX knob

FX (Chorus) 4
Why these settings

The MG30CFX Clean channel stays high-headroom to emulate the Roland JC-120 solid-state sparkle. We slightly scoop the mid to 4 and raise bass and treble to compensate for your Stratocaster's single-coil voicing compared to James Hetfield's active EMG 60. Heavy machine-gun breakdown: switch to OD2 channel, gain 8, bass 7, mid 3, treble 7, and turn FX off.

PRO TIPPick cleanly with a stiff 1.0mm+ plectrum right over the middle pickup to get the snappy, percussive acoustic-like attack characteristic of Hetfield's intro arpeggios.

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These settings are for a Marshall MG30CFX. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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