Unchained amp settings — Marshall Plexi 1959

The Van Halen guitar tone for “Unchained”, dialed in for a Marshall Plexi 1959 with a Gibson Les Paul Standard 50s. Studio version, Fair Warning (1981), tuned to Drop D flat (E♭ Standard with low string dropped to D♭)

Original rig

Frankenstrat (PAF bridge humbucker) → MXR Phase 90 → Marshall 1959 Super Lead (Variac down to ~90V) → MXR M-117 Flanger

Thick, saturated crunch with aggressive mid-forward bite and iconic jet-flanger sweep on the main riff

Amp settings — Marshall Plexi 1959

CHANNELLead (Channel 1) jumped with Normal (Channel 2)

Knob	Setting (0–10)
Gain	8
Bass	3
Mid	8
Treble	6
Presence	6
Reverb	0
Master	8

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01Boss TU-3 Tuner

Bypassed during play

02Ibanez Tube Screamer TS9

Clean boost into front end to mimic Eddie's hot vintage preamp push and tighten the low end

Drive 0 · Tone 5 · Level 8

03MXR Phase 90

Used subtly on specific fills or solos (bypass for main riff)

Speed 3

04Boss NS-2 Noise Suppressor

Tames single-coil or high-gain hum in front of cranked Plexi

Threshold 6 · Decay 2

05MXR M-117R Flanger

RECOMMENDED — not currently owned; critical jet-plane sweep defining the main riff

Manual 6 · Width 7 · Speed 3 · Regen 8

Why these settings

The Gibson Les Paul Standard with PAF-style humbuckers pushes plenty of midrange into your Marshall 1959 Plexi just like Eddie's Frankenstrat. Since a stock 1959 without a Variac can stay bright and loose on the low end, keeping bass dialed down to 3 and using the TS9 as a clean boost (Drive 0, Level 8) tightens the attack and simulates the squish of a pulled voltage. Jump channels 1 and 2 to blend the high-treble bite with enough body for the dropped D-flat riff.

PRO TIPDrop the low E string a whole step down to D (and tune the entire guitar down a half-step to D-flat) to get the heavy open-string drone essential to the main groove, using aggressive pick attack directly over the bridge pickup.

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