Tone library / Black Sabbath / Sweet Leaf

Sweet Leaf amp settings — Marshall DSL40CR

The Black Sabbath guitar tone for “Sweet Leaf”, dialed in for a Marshall DSL40CR with a Gibson Les Paul Modern. Studio version, Master of Reality (1971)

Original rig

1965 Gibson SG Special (John Birch P90s) tuned to C# Standard, Dallas Rangemaster Treble Booster (modified full-range), Laney Supergroup 100W Head, Laney 4x12 Cabs

Dark, sludgy, mid-heavy doom riffing with stinging top-end bite from C# detuning and boosted upper mids

Amp settings — Marshall DSL40CR

CHANNELClassic Gain (Crunch mode) — set Resonance to 7, Tone Shift offBRIGHToff

Knob	Setting (0–10)
Gain	7
Bass	6
Mid	7
Treble	7
Presence	6
Reverb	2
Master	5

Don’t have a Marshall DSL40CR? See this song on other amps → Match your own rig →

Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01Dallas Rangemaster (Treble Booster)

RECOMMENDED — not currently owned; run direct into amp input to push the front-end into authentic Iommi grit

Boost 7

Why these settings

The DSL40CR's Classic Gain Crunch channel replicates early Laney Supergroup breakup well, but Marshall power sections are slightly brighter, so presence is held at 6 to prevent detuned fizz. Your Les Paul humbuckers have more low-mid thickness than Iommi's P90s, requiring bass kept at 6 and resonance at 7 to prevent flub while preserving the heavy C# low end. A dedicated treble booster is recommended to tighten the bass cut and achieve the signature biting attack of Master of Reality.

PRO TIPTune your guitar down 1.5 steps to C# Standard (C# F# B E G# C#) and use a light, heavy-handed downstroke attack near the bridge to get the signature loose-string sludge and harmonic grind of the intro riff.

Get this tone on your amp

These settings are for a Marshall DSL40CR. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

Get ToneAdapt on Google Play

More tones for the Marshall DSL40CR

One Last BreathCreed ThunderstruckAC/DC Crazy trainOzzy Osbourne Scar TissueRed Hot Chili Peppers Seek & DestroyMetallica Beat itMichael jackson

Find your amp

Browse

Marshall DSL40CR settingsALL SONGS FOR THIS AMP Sweet Leaf on other ampsSAME SONG, YOUR AMP Black Sabbath tonesALL SONGS Black Sabbath on the Marshall DSL40CRSAME ARTIST, SAME AMP Gibson Les Paul Modern tonesSAME GUITAR Tone libraryEVERYTHING

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.