N.I.B. amp settings — NUX MG-300

The Black Sabbath guitar tone for “N.I.B.”, dialed in for a NUX MG-300 with a Fender Player Stratocaster. Studio version, Black Sabbath (1970) — intro wah solo and main riff bass tone adapted for guitar

Original rig

Fender Precision Bass (neck pickup, dead flatwound strings) -> Wah pedal -> Laney LA100BL tube head

Wooly, low-mid heavy, slightly overdriven British tube grit with a vocal wah sweep

Amp settings — NUX MG-300

CHANNELPlexi 100 model + 4x12 Greenback IRBRIGHToffBOOSToff

Knob	Setting (0–10)
Gain	6
Bass	8
Mid	7
Treble	4
Reverb	0
Master	7

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Guitar

PICKUPneck TONE4 VOLUME10

Signal chain

01Cry Baby Wah block

Engage for the 'Basically' intro solo sweep; heel-to-toe manual sweep, then bypass for the main riff

Pedal 5

02Tube Screamer (TS9) block

Used as a warm clean boost into the amp model to tighten low-end and add Laney-style grit

Drive 2 · Tone 3 · Level 8

Why these settings

To simulate Geezer Butler's wooly P-bass thump on a single-coil Strat, select the neck pickup and roll the guitar tone knob back to 4 to shave off glassy highs. The NUX Plexi 100 model provides the early-70s non-master British tube crunch, pushed by bass-heavy EQ and cut treble to mimic dead strings through a 100W Laney. For the intro 'Basically' solo, engage the onboard Wah block and sweep rhythmically, then click it off when dropping into the main riff.

PRO TIPPluck hard with your bare fingers directly over the base of the fretboard rather than using a pick to capture the rounded fundamental attack and organic compression of Geezer's technique.

Get this tone on your amp

These settings are for a NUX MG-300. 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.