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and justice for all amp settings — Boss GT-1

The metallica guitar tone for “and justice for all”, dialed in for a Boss GT-1 with a Gibson Les Paul Modern. Studio version, ...And Justice for All (1988)

Original rig

Mesa/Boogie Mark IIC+ head (modified as preamp) into Marshall power section, ESP Explorer 'EET FUK' with EMG 81/60 pickups, A/DA MP-1 preamp in rack, extreme mid-scoop EQ

Tight, scooped, razor-sharp thrash with surgical pick attack and minimal low-mid warmth — the most extreme mid-cut in Metallica's catalog

Amp settings — Boss GT-1

CHANNELRECTIFIER model (MS DIST or R-FIER in GT-1 — closest to modded Mesa high-gain)BOOSToff

Knob	Setting (0–10)
Gain	7
Bass	7
Mid	1
Treble	8
Presence	6
Reverb	0

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01GT-1 Noise Suppressor Block

Enable — high gain requires gate for tight palm mutes

Threshold 4

02GT-1 Parametric EQ Block

Place after amp block — creates the iconic V-curve scoop; cut 800Hz hard, slight 2kHz presence dip

Low 6 · Low-Mid 1 · High-Mid 3 · High 7

Why these settings

The GT-1's Rectifier model gets you closest to Hetfield's modded Mark IIC+ — it has the tight low-end and surgical high-gain character. Your Les Paul's passive humbuckers are warmer and lower output than Hetfield's active EMGs, so treble stays high at 8 and gain bumps +1 vs the original to compensate for the output difference. The parametric EQ block is essential — Justice's tone is defined by its extreme mid-scoop (mids at 1), which the amp block alone cannot fully achieve.

PRO TIPPick right over the bridge pickup pole pieces with the edge of the pick angled slightly — Hetfield's attack on this album is almost percussive, with zero pick drag. The scooped mids mean your palm mutes must be surgically tight or they'll turn to mud.

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