Left Behind amp settings — Boss Katana 50 MkII

The Slipknot guitar tone for “Left Behind”, dialed in for a Boss Katana 50 MkII with a Jackson JS32 Dinky. Studio version, Iowa (2001) — primary heavy rhythm track

Original rig

Rivera Knucklehead Reverb & Mesa Boogie Dual Rectifier, Ibanez RG custom / Fender custom with EMG 81, Maxon OD820 boost, tuned to Drop B

Crushing high-gain nu-metal crunch with tight low-end tracking and razor-sharp upper-mid bite

Amp settings — Boss Katana 50 MkII

CHANNELBrown amp typeBOOSToff

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

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01Boss SD-1 Super Overdrive

Clean boost in front of the amp to tighten low-end tracking for Drop B riffs

Level 10 · Tone 6 · Drive 0

Why these settings

The Boss Katana 50 MkII uses the Brown amp voicing to capture the high-gain aggression of the original Rivera/Mesa blend. Using the SD-1 as a clean boost (Drive at 0, Level maxed) cuts the flubby sub-bass before the preamp, providing the tight, percussive chug of the Iowa album without running double high-gain stages. Presence is set to null because the 50-watt Katana MkII faceplate does not physically feature a presence knob.

PRO TIPTune down to Drop B (B-F#-B-E-G#-C#) with heavy gauge strings and dig in with sharp, aggressive down-picking directly over the bridge pickup to get the percussive attack of the opening riff.

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These settings are for a Boss Katana 50 MkII. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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Boss Katana 50 MkII settingsALL SONGS FOR THIS AMP Left Behind on other ampsSAME SONG, YOUR AMP Slipknot tonesALL SONGS Slipknot on the Boss Katana 50 MkIISAME ARTIST, SAME AMP Jackson JS32 Dinky tonesSAME GUITAR Tone libraryEVERYTHING

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