Tone library / Ozzy Osbourne / Crazy Train

Crazy Train amp settings — Marshall MG30CFX

The Ozzy Osbourne guitar tone for “Crazy Train”, dialed in for a Marshall MG30CFX with a Dean Ml 79 floyd. Studio version, Blizzard of Ozz (1980)

Original rig

1975-76 Marshall JMP 1959 Super Lead 100W into 4x12 cabs with Altec speakers; 1974 Gibson Les Paul Custom (bridge humbucker); MXR Distortion+ (Output 10, Distortion 4), MXR 10-band EQ (500Hz +10, 1k +6, 250 +7 — heavy mid boost)

Mid-forward, bright, articulate hard rock with tight low end and cutting presence — NOT scooped

Amp settings — Marshall MG30CFX

CHANNELOD1BOOSToff

Knob	Setting (0–10)
Gain	6
Bass	3
Mid	7
Treble	7
Reverb	0
Master	6

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01Boss OS-2 (Overdrive/Distortion)

Color toward OD side (~30%) replicates MXR Distortion+ character — output high, drive moderate. This is your primary gain source.

Level 8 · Tone 6 · Drive 4 · Color 3

02MXR 6-band EQ

After the OS-2. Replicates Randy's mid-hump — boost 400Hz and 800Hz hard, slight cut at 100Hz keeps it tight. This is essential to the Crazy Train tone.

100Hz 4 · 200Hz 6 · 400Hz 8 · 800Hz 9 · 1.6kHz 7 · 3.2kHz 5

Why these settings

The MG30CFX's OD1 channel is Marshall-voiced but more scooped than a real Plexi — the MXR 6-band EQ compensating with a strong 400-800Hz boost is critical. Bass at 3 keeps the riff tight like Randy's documented bass ~2 setting. Your Dean ML has hot humbuckers similar to his Les Paul Custom, so gain stays moderate at 6. The MG30CFX has no presence knob.

PRO TIPRandy's pick attack was aggressive and precise — dig in hard on the downstrokes of the main riff and let the notes breathe slightly between each chug. The tone sounds thin if you play it timidly; it explodes when you commit to every note.

Get this tone on your amp

These settings are for a Marshall MG30CFX. 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.