Eruption amp settings — Boss Katana 100 MkII

The Van Halen guitar tone for “Eruption”, dialed in for a Boss Katana 100 MkII with a Harley Benton Fusion-III HH. Studio version, Van Halen (1978)

Original rig

1968 Marshall 1959 Super Lead (Variac to ~90V, dimed) + Frankenstrat (bridge PAF humbucker) + MXR Phase 90 + Maestro Echoplex EP-3 + Univox EC-80A tape echo + Sunset Sound plate reverb

Saturated, harmonic-rich Brown Sound with intense midrange bark, high-end bite, subtle phaser sweep, and plate ambience

Amp settings — Boss Katana 100 MkII

CHANNELBrown amp typeBOOSTon

Knob	Setting (0–10)
Gain	7
Bass	5
Mid	8
Treble	7
Presence	6
Reverb	4
Master	5

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01Onboard Booster (Boss Blues Driver block)

Internal Katana Booster block to simulate the hot PAF driving the front end

Drive 3 · Tone 5 · Level 8

02Onboard Phaser (MXR Phase 90 style)

Set slow and subtle across the entire track

Rate 2 · Depth 6 · Resonance 4

03Onboard Delay (Analog / Tape Echo style)

Replicates the Maestro EP-3 slapback echo (~300ms)

Time 3 · Feedback 3 · Effect Level 3

Why these settings

The Katana 100 MkII's Brown amp type directly models the cranked Marshall Plexi character of the original rig. Pushing the midrange to 8 provides the signature throat and pick chirp, while the onboard Blues Driver boost pushes the front end into the harmonic saturation needed for effortless tapping. The onboard phaser and plate reverb recreate the essential outboard studio processing without needing physical pedals.

PRO TIPLightly palm-mute the lower strings with the edge of your right hand while tapping to prevent sympathetic resonance and let the upper-mid harmonics ring clearly.

Get this tone on your amp

These settings are for a Boss Katana 100 MkII. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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Boss Katana 100 MkII settingsALL SONGS FOR THIS AMP Eruption on other ampsSAME SONG, YOUR AMP Van Halen tonesALL SONGS Van Halen on the Boss Katana 100 MkIISAME ARTIST, SAME AMP Harley Benton Fusion-III HH tonesSAME GUITAR Tone libraryEVERYTHING

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