Riff Tone

Diary of a Madman

Ozzy Osbourne

Guitarmetal1980s

Original Gear

Guitar1970 Gibson Les Paul Custom (white, likely neck pickup for clean intro)

AmpMarshall model 1959 Super Lead 100-watt head (early 1970s, metal front) into Marshall 4x12 cabinets with Altec 417-8H speakers

PickupsGibson Super 74 humbucker (neck), Gibson PAF (bridge)

Amp Settings

gain0

bass5.5

mid6.5

treble7

reverb2

presence5.5

Effects & Signal Chain

No effects used for this tone

Notes

Studio recording, 1981. Clean intro/riff section. Randy Rhoads alternated between Les Paul Custom and custom Vs, but Les Paul Custom is most associated with clean/classical passages. Marshall head is confirmed for studio use. Effects are based on both source mentions and audible analysis.

Tone Character(10)

warm and roundedbell-like clarityarticulate and dynamicnatural sustainopen and ringingslight studio ambienceno audible distortionno modulation effectsfingerstyle classical influencesubtle reverb

Difficulty

The clean intro/riff requires advanced fingerstyle technique, classical-inspired arpeggios, and precise dynamic control, making it challenging even for experienced players.

Sources

How to Play Ozzy Osbourne's "I Don't Know" - Guitar World Randy Rhoads | Wiki @ Ultimate-Guitar.com Ozzy Osbourne & Ozzy Osbourne – Diary Of A Madman - Gear & Equipment Used on the Album | Equipboard The 25 greatest metal guitar tones of all time

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