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Metallica
Tone profile
What makes this tone
Signal chain
Tone Character
Recorded tone character
Gain character
Tight, heavily saturated Justice-era rhythm gain with a hard, cold attack.
Bass
Big and controlled.
Mids
Strongly reduced for the characteristic Justice scoop.
Treble
Bright and cutting.
Brightness / presence
Forward and metallic.
Compression
High and tight, emphasizing machine-like rhythm precision.
Effects
This seed targets the heavy distorted section. The clean sound is a separate ADA MP-1-based path; Hammett blended ADA/Boogie gear for lead sounds.
Evidence / Sources
Tone character: tight, scooped, cold, aggressive, cutting, compressed, percussive, dry
One contains multiple distinct guitar tones. This seed is the heavy Hetfield rhythm reference; Kirk Hammett separately recalled an ESP KH-1 and ADA MP-1/Boogie combinations for the solo and clean parts.
This seed targets the heavy distorted section. The clean sound is a separate ADA MP-1-based path; Hammett blended ADA/Boogie gear for lead sounds.
Guitar
ESP Explorer/EMG-equipped Hetfield rhythm reference
Kirk Hammett separately recalled using his ESP KH-1 for the One solo
Amp
Mesa/Boogie Mark IIC+/C++-family high-gain architecture for heavy parts
clean/lead layers use additional gear
Channel
High-gain rhythm reference
the song also contains a separate clean ADA MP-1-based sound
Pickup
Active EMG bridge humbucker for the heavy rhythm reference