Tone library / Metallica / For Whom the Bell Tolls

For Whom the Bell Tolls amp settings — Kozmos Blaze-30

The Metallica guitar tone for “For Whom the Bell Tolls”, dialed in for a Kozmos Blaze-30 with a Ibanez GIO GRG170DX. Studio version, Ride the Lightning (1984)

Original rig

Gibson Explorer with Dirty Fingers pickups into Marshall JMP 2203 (or JCM800 2203), boosted with Ibanez Tube Screamer TS-9 for tightness. Marshall 4x12 cabinet.

Tight, aggressive palm-muted thrash crunch with scooped mids and cutting high-end bite

Amp settings — Kozmos Blaze-30

Knob	Setting (0–10)
Gain	7
Bass	5
Mid	5
Treble	7
Master	6

Don’t have a Kozmos Blaze-30? See this song on other amps → Match your own rig →

Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01Tube Screamer style overdrive (e.g. TS9, Joyo Vintage OD, Behringer TO800)

RECOMMENDED — not currently owned. Used as a boost into a dirty amp for tightness and mid-focus. Without this pedal, push amp gain to 8 and accept slightly looser low-end.

Drive 2 · Tone 6 · Level 8

Why these settings

The Kozmos Blaze-30 is an unrecognized amp model — settings based on universal gain/bass/mid/treble knobs assuming typical solid-state voicing. Original Marshall JMP has presence at 6; your amp likely lacks this control so it is nulled. The Ibanez GIO's Infinity R humbuckers are hotter than Hetfield's passive Dirty Fingers, so gain is dropped 0.5-1 from the original's 7.5-8 to prevent mud.

PRO TIPLock your picking hand into a strict downstroke gallop anchored near the bridge pickup — Hetfield's attack consistency is half the tone. Palm mute firmly but not dead; you want thud with note definition, not pure chunk.

Get this tone on your amp

These settings are for a Kozmos Blaze-30. 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.