Gravity amp settings — Marshall MG30CFX

The John Mayer guitar tone for “Gravity”, dialed in for a Marshall MG30CFX with a Glarry 1. Studio version, Continuum (2006)

Original rig

Fender Stratocaster (SRV Signature, Big Dipper pickups) → Klon Centaur (always-on, low gain) → Two Rock Custom Reverb Signature (clean platform, no breakup)

Super-clean dynamic touch tone with transparent harmonic richness, zero crunch

Amp settings — Marshall MG30CFX

CHANNELCleanBOOSToff

Knob	Setting (0–10)
Gain	1
Bass	5
Mid	5
Treble	6
Reverb	3
Master	6

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Guitar

PICKUPneck TONE7 VOLUME8

Why these settings

Two Rock amps are ultra-clean boutique Fender-style platforms with massive headroom; the Marshall MG30CFX's Clean channel is far less touch-sensitive and will add slight solid-state compression even at low gain. Gain is set to 1 (not 0) because the MG's Clean channel needs minimal preamp signal to wake up without breaking up. Mayer rolls his guitar volume to 8 and tone to 7 to soften the attack — critical on your humbucker-equipped Glarry, which has hotter output than his single-coil Strat. Without the Klon's transparent compression, dig in lighter with your pick to preserve dynamics.

PRO TIPMayer's entire tone lives in his right-hand attack and left-hand vibrato. Practice playing at half your normal pick force — the MG30CFX won't reward heavy digging like a tube amp. Roll your guitar volume down to 6-7 during verses for even cleaner passages, then push it back to 8 for choruses.

Get this tone on your amp

These settings are for a Marshall MG30CFX. 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.