Tone library / Metallica / For Whom the Bell Tolls

For Whom the Bell Tolls amp settings — Fender Acoustasonic 15

The Metallica guitar tone for “For Whom the Bell Tolls”, dialed in for a Fender Acoustasonic 15 with a Harley Benton DC-580 CH Vintage Series. Studio version, Ride the Lightning (1984)

Original rig

Gibson Flying V → Ibanez TS9 Tube Screamer → Marshall JCM800 2203

Tight, aggressive thrash rhythm with scooped mids, palm-mute chug, and controlled high-gain saturation
Amp settings — Fender Acoustasonic 15
GAIN 0 BASS 7 MID 5 TREBLE 4 PRESENCE 0 REVERB 0 MASTER 6
KnobSetting (0–10)
Gain0
Bass7
Mid5
Treble4
Presence0
Reverb0
Master6
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Guitar
PICKUPbridge TONE8 VOLUME10
Signal chain

01Behringer Overdrive Distortion OD100

This is your ONLY gain source — the Acoustasonic has no overdrive, so the OD100 must do all the heavy lifting. Push Drive higher than a typical TS boost scenario.

Level 8 · Tone 6 · Drive 7

02Noise Gate (RECOMMENDED — not owned)

RECOMMENDED — Boss NS-2 or similar. High-gain into a clean amp will produce hiss; a gate tightens the palm mutes and kills noise between riffs.

Threshold 5 · Decay 3
Why these settings

The Fender Acoustasonic 15 is a 15-watt practice amp designed for acoustic-electric guitars — it has no overdrive channel, no presence control, and limited EQ shaping. It will not produce JCM800-style saturation under any circumstances. Your OD100 pedal becomes the entire gain stage; I've set amp gain to 0 and pushed the pedal's Drive to 7 to compensate. Bass raised to 7 (vs original's 4) because the Acoustasonic is thin and lacks the low-end thump of a 4x12 Marshall cab. Treble dropped to 4 (vs original's 7) because this amp gets harsh and fizzy with distortion pedals into its bright voicing. This rig will approximate the aggression but will lack the tight low-end and dynamic response of a real tube half-stack.

PRO TIPLock your picking hand into a strict down-stroke gallop anchored near the bridge pickup — Hetfield's tone is 50% right-hand technique. Palm mute firmly but not completely dead; you want the note to growl, not thud. Tune to E♭ Standard to match the recording.

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

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