Tone library / Metallica / For Whom the Bell Tolls

For Whom the Bell Tolls amp settings — Valeton GP-100

The Metallica guitar tone for “For Whom the Bell Tolls”, dialed in for a Valeton GP-100 with a Sterling by Music Man StingRay Ray4. Studio version, Ride the Lightning (1984) — iconic distorted lead intro & verse riffs

Original rig

Rickenbacker 4001 / Aria Pro II into Morley Power Wah Boost, EHX Russian/Sovtek Big Muff (or Morley Fuzz), Mesa Boogie D-180 / 400+ tube head into 4x12 & 1x15 cabs

Aggressive, mid-forward singing fuzz with biting top-end cut and controlled low fundamental

Amp settings — Valeton GP-100

CHANNELAmpeg SVT / Bass Amp Block (Clean Amp + 8x10 or 1x15 Cab IR)BRIGHToffBOOSToff

Knob	Setting (0–10)
Gain	3
Bass	4
Mid	9
Treble	6
Reverb	0
Master	8

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01Muff Fuzz / Pi Fuzz Block (GP-100 DST)

In front of amp model. Provides the iconic singing distortion.

Sustain 8 · Tone 6 · Volume 7

02Wah / Optical Wah Block (GP-100 WAH/PRE)

Set cocked (parked at ~60%) for the iconic vocal resonance bite during the intro, or rock through sweep.

Position 6 · Range 8 · Mix 7

Why these settings

Because the GP-100 runs a high-gain Big Muff model up front, keep the GP-100 bass amp model relatively clean with low preamp gain to avoid muddy digital clipping. Cliff pushed massive midrange (~9-10) to slice through distorted guitars, so dial the StingRay preamp EQ flat/slightly boosted in mids while trimming excessive sub-bass rumble. The active humbucker on your Ray4 hits the GP-100 hotter than passive vintage pickups, providing extra attack and sustain.

PRO TIPCliff plucked hard with bare fingers directly over or slightly behind the bridge pickup rather than using a pick, imparting a distinct fleshy attack that drives the fuzz into smooth, cello-like sustain.

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These settings are for a Valeton GP-100. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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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.