One amp settings — Crate Gx-15

The Metallica guitar tone for “One”, dialed in for a Crate Gx-15 with a Gretsch G2215-P90 Streamliner™ Junior Jet. Studio version, ...And Justice for All (1988) — signature heavy machine-gun rhythm riff & solo section

Original rig

Mesa Boogie Mark IIC+ slaved into Marshall power amp with 5-band graphic EQ V-curve, ESP Explorer with EMG 81, Roland JC-120 (cleans)

Aggressive, razor-sharp scooped-mid thrash metal rhythm with tight low-end and biting top-end attack

Amp settings — Crate Gx-15

CHANNELOverdrive channel (Gain switch in)

Knob	Setting (0–10)
Gain	8
Bass	7
Mid	2
Treble	8
Reverb	0
Master	5

Don’t have a Crate Gx-15? See this song on other amps → Match your own rig →

Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01ProCo Rat 2 or Boss MT-2 Metal Zone

RECOMMENDED — not currently owned; adds the tight, cascading preamp saturation the solid-state practice amp lacks

Distortion 7 · Filter / Tone 6 · Volume / Level 6

Why these settings

The Crate GX-15's built-in overdrive channel is pushed to 8 to reach thrash saturation, with mids scooped hard to 2 to replicate the classic Mesa Boogie Mark IIC+ graphic EQ 'V-curve'. Because the Gretsch Broad'Tron bridge humbucker has lower output than active EMG 81s, keeping treble elevated at 8 preserves the razor-sharp percussive bite on the machine-gun triplets. Clean intro: switch amp to Clean channel with Gain off and select the neck P90 pickup.

PRO TIPKeep your palm-muting hand anchored tightly against the bridge saddles and strike the low E string with hard, downward-angled pick attack using a stiff (1.14mm+) pick to emulate James Hetfield's percussive chug.

Get this tone on your amp

These settings are for a Crate Gx-15. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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More tones for the Crate Gx-15

Seek & DestroyMetallica CreepRADIOHEAD

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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.