Say it ain't so amp settings — Fender Mustang LT25

The Weezer guitar tone for “Say it ain't so”, dialed in for a Fender Mustang LT25 with a Ibanez S521. Studio version, Weezer (Blue Album) 1994 — iconic clean verse riff

Original rig

Fender Twin Reverb, Gibson Les Paul (humbuckers), no pedals for clean verse tone

Warm, round clean with subtle compression, mid-forward clarity, slight room verb, chimey but not brittle

Amp settings — Fender Mustang LT25

CHANNEL'65 Twin Clean voiceBRIGHToffBOOSToff

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

Don’t have a Fender Mustang LT25? See this song on other amps → Match your own rig →

Guitar

PICKUPneck TONE8 VOLUME10

Why these settings

The Mustang LT25 uses the onboard '65 Twin Clean amp model to replicate the original Fender Twin Reverb. The LT25 does not feature a physical presence knob on its panel, so that value is omitted. Heavy chorus/distortion chorus: switch the amp preset to a high-gain British/Metal model.

PRO TIPPick with a light, bouncy touch near the neck pickup using a thin or medium pick to get that smooth, round articulation on the opening chord arpeggios without driving the preamp into unwanted breakup.

Get this tone on your amp

These settings are for a Fender Mustang LT25. ToneAdapt matches any song to whatever amp, guitar and pedals you own — first match is free.

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More tones for the Fender Mustang LT25

Black Hole SunSoundgarden Ziua vrăjitoarelorCargo King For A DayPierce The Veil Bleed Me an OceanAcid Bath MaggieFinn wolfhard Where is my mindThe pixies

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Fender Mustang LT25 settingsALL SONGS FOR THIS AMP Say it ain't so on other ampsSAME SONG, YOUR AMP Weezer tonesALL SONGS Weezer on the Fender Mustang LT25SAME ARTIST, SAME AMP Ibanez S521 tonesSAME GUITAR Tone libraryEVERYTHING

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.