Iron Man amp settings — Yamaha Ga-15

The Black Sabbath guitar tone for “Iron Man”, dialed in for a Yamaha Ga-15 with a Yamaha EG112. Studio version, Paranoid (1970)

Original rig

1965 Gibson SG Special (P90 bridge pickup) into modified Dallas-Arbiter Rangemaster Treble Booster and cranked 100W Laney Supergroup LA100BL head with 4x12 cab

Dark, mid-heavy fuzz-crunch with tight low end and upper-mid bite

Amp settings — Yamaha Ga-15

CHANNELCleanBOOSToff

Knob	Setting (0–10)
Gain	3
Bass	4
Mid	8
Treble	7
Master	5

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

Guitar

PICKUPbridge TONE8 VOLUME10

Signal chain

01Treble Booster / Overdrive (e.g. Catalinbread Sabbra Cadabra or Naga Viper)

RECOMMENDED — not currently owned

Gain / Boost 8 · Tone / Range 7 · Level / Volume 7

Why these settings

The Yamaha GA-15 is a small solid-state practice amp whose built-in drive channel gets excessively harsh and fizzy for Iommi's power-tube saturation. To prevent harshness, run the amp on Clean at low gain and use an external treble booster or vintage-voiced drive pedal to provide the core dirt. The EG112 bridge humbucker is hotter than Iommi's P90s, so roll the guitar tone back slightly to tame top-end spike while pushing the amp's Middle control.

PRO TIPPick aggressively right near the bridge saddles with a medium-to-heavy pick to replicate Iommi's signature percussive, biting attack.

Get this tone on your amp

These settings are for a Yamaha Ga-15. 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.