Tone library / David Quinlan / Eu Sou Livre

Eu Sou Livre amp settings — Marshall JCM900

The David Quinlan guitar tone for “Eu Sou Livre”, dialed in for a Marshall JCM900 with a Epiphone Slash Les Paul Standard. Studio version, 'No Infinito Deste Amor' album - contemporary worship production

Original rig

Likely Fender-style clean amp (or modeler) with humbucker guitar, light compression, and ambient delay/reverb - standard modern worship rig

Bright, chimey clean with subtle edge-of-breakup warmth, spacious ambience
Amp settings — Marshall JCM900
CHANNELClean ChannelBRIGHToffBOOSToff
GAIN 2 BASS 5 MID 6 TREBLE 6 PRESENCE 5 REVERB 0 MASTER 5
KnobSetting (0–10)
Gain2
Bass5
Mid6
Treble6
Presence5
Reverb0
Master5
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Guitar
PICKUPneck TONE7 VOLUME8
Signal chain

01Tank G (Multi-FX) - Compressor Block

Light studio compression for note sustain and evenness

Level 6 · Sustain/Ratio 4 · Attack 5

02Tank G (Multi-FX) - Digital Delay Block

Dotted eighth or quarter note delay (~350-400ms) for worship ambience - run in FX loop if available

Time 5 · Feedback/Repeats 3 · Mix/Level 4

03Tank G (Multi-FX) - Reverb Block

Hall or plate reverb for spacious worship sound - FX loop placement preferred

Decay/Time 6 · Mix/Level 5 · Tone 6
Why these settings

The JCM900 is inherently mid-forward and grittier than the likely Fender-style or modeler clean used on the original. Using the clean channel with gain at 2 prevents the Marshall bark from overpowering the worship shimmer. Rolling your Les Paul volume to 8 and using the neck pickup softens the humbucker output to approximate a warmer, less aggressive tone. The JCM900's presence is potent—keeping it at 5 avoids harshness while maintaining clarity.

PRO TIPFor authentic worship dynamics, keep your pick attack light during verses and dig in slightly on choruses—the JCM900's touch sensitivity will give you natural volume swells without changing settings. Consider adding a clean boost or light overdrive (TS-style at low gain) for the anthemic chorus sections to push the amp into warm breakup territory.

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These settings are for a Marshall JCM900. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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