In Bloom amp settings — Fender Mustang LT25

The Nirvana guitar tone for “In Bloom”, dialed in for a Fender Mustang LT25 with a Yamaha Rgx121z Rm. Main riff and chorus, Nevermind (1991) studio album cut

Original rig

Fender Jaguar/Stratocaster (bridge humbucker) -> Boss DS-1/DS-2 -> Mesa/Boogie Studio Preamp / '65 Fender Twin/Bassman into Marshall 4x12 cab

Thick, aggressive grunge rhythm crunch with biting midrange and heavy low-end power

Amp settings — Fender Mustang LT25

CHANNELMetal 2000 amp modelBRIGHToffBOOSToff

Knob	Setting (0–10)
Gain	7
Bass	6
Mid	5
Treble	7
Reverb	0
Master	6

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Guitar

PICKUPbridge TONE10 VOLUME10

Signal chain

01EHX Small Clone

Engage for clean verse sections; bypass during main riff and chorus

Rate 6 · Depth 10

02Boss MT-2 Metal Zone

Alternative dirt source: if using MT-2 into front, switch amp model to Fender Clean and drop amp gain to 2

Level 5 · High 6 · Low 6 · Middle 5 · Mid Freq 4 · Dist 6

Why these settings

The Mustang LT25's 'Metal 2000' amp model delivers the tight preamp saturation of Kurt's Mesa Studio Preamp without requiring an external dirt box. Keep the EQ punchy with mid around 5 and treble at 7 to capture the sharp bite of the bridge humbucker without harsh high-end fizz. Clean verse: switch to a clean preset or bypass dirt and engage the Small Clone with depth switch up.

PRO TIPHit the open power chords aggressively right near the bridge saddles with a medium-heavy pick to get that iconic percussive, metallic crunch on the low string attack.

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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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.