Eruption amp settings — Marshall Plexi 1959

The Van Halen guitar tone for “Eruption”, dialed in for a Marshall Plexi 1959 with a Fender American Professional II Stratocaster. Studio version, Van Halen (1978)

Original rig

1968 Marshall Super Lead 100W (variac-lowered voltage), Frankenstrat (bridge PAF humbucker), MXR Phase 90, Univox EC-80 Tape Echo, Sunset Sound EMT 140 plate reverb

Classic Brown Sound — harmonically saturated, mid-heavy crunch with smooth top-end and slow phase sweep

Amp settings — Marshall Plexi 1959

CHANNELJumpered (High Treble Channel I input, patched to Normal Channel II)

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

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01MXR Phase 90 (Script)

RECOMMENDED — not currently owned; essential for the slow opening sweep

Speed 2

02Tape Echo / Delay

RECOMMENDED — not currently owned; set to ~310ms slapback for the tapping section

Time 4 · Repeats 3 · Mix 3

Why these settings

Running a single-coil Strat into a Plexi requires trimming the treble to 6 and boosting the mids to 8 to mimic Eddie's overwound bridge PAF without getting thin. Volume I (High Treble) and Volume II (Normal) must be dimed together via jumpered inputs to extract pure power-tube saturation without pedals. Keep the presence moderate at 6 to prevent the Strat single coil from sounding harsh on the high-fret tapping passages.

PRO TIPPick forcefully with the edge of a heavy pick directly near the bridge saddles, and roll your Strat's volume knob down slightly to 8.5 if the single-coil pickup squeals under full power-tube compression.

Get this tone on your amp

These settings are for a Marshall Plexi 1959. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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