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While My Guitar Gently Weeps amp settings — Fender Mustang lt40s

The The Beatles guitar tone for “While My Guitar Gently Weeps”, dialed in for a Fender Mustang lt40s with a Fender Isfe25000896. Studio version, The Beatles (White Album, 1968) - Eric Clapton lead guitar track

Original rig

1957 Gibson Les Paul Standard ('Lucy') with PAF humbuckers into a cranked Fender Deluxe Reverb / Twin Reverb, with Abbey Road varispeed ADT / tape flanging

Warm, singing lead tone with creamy sustain, rolled-off highs, prominent low-mids, weeping vocal quality

Amp settings — Fender Mustang lt40s

CHANNEL65 Deluxe Reverb modelBRIGHToffBOOSToff

Knob	Setting (0–10)
Gain	6
Bass	5
Treble	4
Reverb	3
Master	6

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Guitar

PICKUPneck TONE4 VOLUME9

Signal chain

01Boss CS-3 Compression Sustainer

Provides the singing, endless sustain of Clapton's cranked tube amp without harsh transients

Level 6 · Tone 4 · Attack 5 · Sustain 7

02MXR Phase 90

Set to a very slow sweep to approximate the subtle Abbey Road ADT/tape flanging applied to the solo track

Speed 2

Why these settings

The Fender Mustang LT40S faceplate features only Bass and Treble controls (no Mid or Presence knobs), so select the onboard '65 Deluxe Reverb amp model to replicate the vintage tube breakup. Rolling your guitar tone knob down to 4 achieves Clapton's signature 'woman tone' vocal roundness on the neck pickup. The CS-3 supplies the singing sustain of the cranked studio amp, while the Phase 90 on a minimal speed mimics Ken Scott's tape-flanging effect.

PRO TIPPick firmly with the flesh of your thumb or pick slightly angled near the neck pickup, and apply a wide, slow finger vibrato on sustained bends to mimic the weeping ADT effect heard on the original tape master.

Get this tone on your amp

These settings are for a Fender Mustang lt40s. 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.