Gravity amp settings — Valeton GP-100

The John Mayer guitar tone for “Gravity”, dialed in for a Valeton GP-100 with a Yamaha Pacifica 612VIIFM. Studio version, Continuum (2006) — main rhythm/fill tone

Original rig

Two-Rock Custom Reverb Signature & Dumble Steel String Singer + Fender Custom Shop Stratocaster ('The Black One') + Klon Centaur / Marshall Bluesbreaker

Warm, scooped, dynamic edge-of-breakup clean with blooming low-end and airy top-end

Amp settings — Valeton GP-100

CHANNELUS CLN (Fender Twin Reverb model) + 2x12 US Cln Cab IRBRIGHToffBOOSToff

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

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Guitar

PICKUPneck+middle TONE9 VOLUME8

Signal chain

01Comp Block (COMP - Ross style)

Provides subtle squeeze and sustain for fingerstyle attack

Sustain 4 · Attack 5 · Level 7

02Drive Block (SWEET OD - Sweet Baby / Transparent OD)

Simulates transparent Klon edge-of-breakup boost

Gain 2 · Focus 5 · Level 8

03Reverb Block (SPRING)

Lush studio spring space

Decay 5 · Tone 5 · Mix 4

Why these settings

The Valeton GP-100 uses the US CLN amp model to emulate the high-headroom, scoopy clean foundation of Mayer's Two-Rock/Dumble setup. A low-gain transparent overdrive block adds harmonic bloom without overt distortion. The Pacifica 612's neck+middle position nails the signature Strat 'quack' and scooped midrange heard throughout Continuum.

PRO TIPPlay using the thumb and index finger slap-strum technique rather than a flatpick to achieve Mayer's dynamic, percussive low-end thud and airy note bloom.

Get this tone on your amp

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

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Song, artist and gear names are used to identify the tone being matched; ToneAdapt is not affiliated with or endorsed by the artists or manufacturers mentioned. Settings are AI-generated starting points — trust your ears.