Tone library / Sum 41 / Fat lip

Fat lip amp settings — Marshall JCM800 2203

The Sum 41 guitar tone for “Fat lip”, dialed in for a Marshall JCM800 2203 with a Ibanez GIO GRG121DX. Studio version, All Killer No Filler (2001) - Main Riff and Chorus

Original rig

Marshall JCM800 2203 with Marshall 4x12 cab (Celestion Vintage 30s), guitars loaded with EMG 81 / Seymour Duncan JB humbuckers

Tight, punchy pop-punk crunch with aggressive midrange bark and fast palm-mute response
Amp settings — Marshall JCM800 2203
CHANNELHigh Sensitivity Input
GAIN 7 BASS 6 MID 7 TREBLE 6 PRESENCE 6 MASTER 5
KnobSetting (0–10)
Gain7
Bass6
Mid7
Treble6
Presence6
Master5
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Guitar
PICKUPbridge TONE10 VOLUME10
Signal chain

01Donner DS-1 (Distortion)

Used as a clean boost/tightener in front of the amp to mimic the fast low-end transient of active EMG pickups

Dist 1 · Tone 5 · Level 8
Why these settings

The JCM800 2203 is the exact core amp used on the record, so its preamp is dialed to provide the main crunch rather than relying entirely on the pedal. The Ibanez IBZ-6 passive pickups have softer output and slightly looser bass than the studio EMG 81, so the Donner DS-1 is set with minimal distortion and elevated level to push the input and tighten palm-mutes. Midrange is pushed to 7 to replicate the signature British punch cutting through the mix.

PRO TIPDig in heavily with downward pick strokes right next to the bridge saddles and keep your palm-mute pressure firm to match the percussive, machine-gun attack of the opening riff.

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