In Bloom (Nirvana) guitar tone and amp settings
In Bloom guitar tone on a BOSS Katana 50 Gen 3: Crunch amp type, medium gain (Gain 6.5), bright top (Treble 6.5), even mids (Middle 6), bridge pickup.
Settings for your amp
The song has distinct sounds: Solo. Each rig below lists what to change for them.
In Bloom settings on a BOSS Katana 50 Gen 3
BOSS Katana 50 Gen 3 settings for every songAmpBOSS Katana 50 Gen 3
GuitarElectric guitar with two humbuckers
The same settings in text
Amp
- Variation
- Off
- Amp Type
- Crunch
- Gain
- 6.5
- Volume
- 6
- Bass
- 5
- Middle
- 6
- Treble
- 6.5
- Booster Color
- Orange
- Booster
- 3.5
- Mod
- 0
- FX
- 0
- Delay
- 0
- Reverb Color
- Green
- Reverb
- 1
- Master
- Set to your room
- Power Control
- Set to your room
Electric guitar with two humbuckers
- Pickup Selector
- Bridge
- Volume
- 10
- Tone
- 7.5
In Bloom settings on a Positive Grid Spark 40
Positive Grid Spark 40 settings for every songAmpPositive Grid Spark 40
GuitarElectric guitar with two humbuckers
The same settings in text
Amp
- Amp Type
- Hi-Gain
- Gain
- 5.5
- Bass
- 4.5
- Mid
- 5
- Treble
- 6
- Master
- Set to your room
- Mod
- 0
- Delay
- 0
- Reverb
- 1
- Output
- Set to your room
- App Amp Model
- Treadplate
- App Drive
- Guitar Muff
- App Comp/Wah
- Off
- App Mod/EQ
- Off
- App Delay
- Off
- App Reverb
- Room Studio A
Electric guitar with two humbuckers
- Pickup Selector
- Bridge
- Volume
- 10
- Tone
- 7
In Bloom settings on a Fender Mustang LT25
Fender Mustang LT25 settings for every songAmpFender Mustang LT25
GuitarElectric guitar with two humbuckers
The same settings in text
Amp
- Amp Model
- 90S ROCK
- Gain
- 5
- Volume
- 7
- Treble
- 6
- Bass
- 5
- Middle
- 6
- Master
- Set to your room
- Stomp
- ROCK DIRT
- Mod
- None
- Delay
- None
- Reverb
- SMALL ROOM
Electric guitar with two humbuckers
- Pickup Selector
- Bridge
- Volume
- 10
- Tone
- 7
In Bloom settings on any amp with Gain, Bass, Mid, Treble
Amp
GuitarElectric guitar with two humbuckers
The same settings in text
Amp
- Gain
- 7
- Bass
- 5
- Mid
- 6.5
- Treble
- 6
Electric guitar with two humbuckers
- Pickup Selector
- Bridge
- Volume
- 10
- Tone
- 7
Song parts
BOSS Katana 50 Gen 3
Solo:
Amp Type Clean, Gain 3.5, Booster 0
.Layer a cleaner line over the distorted backing.
Song parts
Positive Grid Spark 40
Solo:
Gain 2.5, App Drive Off
.Layer this cleaner sound with the distorted solo track.
Song parts
Fender Mustang LT25
Solo:
Gain 2.5, Stomp None, Volume 7
.Record this cleaner take alongside the distorted solo layer.
Song parts
Any amp with Gain, Bass, Mid, Treble
Solo:
Gain 3.5, Volume 7
.Overdub a cleaner pass beneath the distorted line.

Why it sounds like that

Kurt Cobain's main studio guitars for Nevermind were a 1969 Lake Placid Blue Competition Mustang and a 1965 sunburst Fender Jaguar. The amps were mainly a Mesa Boogie and a Fender Bassman, and his pedals included a Big Muff and a Rat. Cobain doubled a lot of the rhythm guitars and overdubbed clean and distorted tracks in almost all of the little solo sections.
- Double the rhythm guitars, and overdub clean and distorted tracks in the solo sections.
What amp did Kurt Cobain use on In Bloom?

- Butch Vig said the main amps on Nevermind were a Mesa Boogie and a Fender Bassman. (on the album Nevermind)[1]
- Butch Vig said Kurt had a Big Muff on Nevermind. (on the album Nevermind)[2]
- Butch Vig said Kurt had a Rat distortion pedal that he used on a couple of songs. (on the album Nevermind)[1]
- Butch Vig said Kurt doubled a lot of the rhythm guitars on Nevermind, and overdubbed clean and distorted tracks in almost all of the little solo sections. (on the album Nevermind)[1]
- Guitar.com says Kurt's primary studio guitars for Nevermind were a 1969 Lake Placid Blue Competition Mustang and a 1965 sunburst Fender Jaguar. (on the album Nevermind)[3]
Questions
What amp did Kurt Cobain use on In Bloom?
The sources on this page document Kurt Cobain's gear on In Bloom by Nirvana: guitar, Fender Jaguar [1]; amp, Mesa Boogie [1]; effects, Big Muff [2], Rat [1]. Each value cites the numbered source it comes from, listed at the foot of the page.
What are the In Bloom settings on a BOSS Katana 50 Gen 3?
For the In Bloom guitar tone on a BOSS Katana 50 Gen 3, set Amp Type Crunch, Gain 6.5, Volume 6, Bass 5, Middle 6, Treble 6.5, Booster Color Orange, Booster 3.5, Mod 0, FX 0, Delay 0, Reverb Color Green, Reverb 1; on the electric guitar with two humbuckers, Pickup Selector Bridge, Volume 10, Tone 7.5. Set Master and Power Control to your room. They are AI-assisted starting points; adjust them by ear on your own amp.
What are the In Bloom settings on a Positive Grid Spark 40?
For the In Bloom guitar tone on a Positive Grid Spark 40, set Amp Type Hi-Gain, Gain 5.5, Bass 4.5, Mid 5, Treble 6, Mod 0, Delay 0, Reverb 1, App Amp Model Treadplate, App Drive Guitar Muff, App Reverb Room Studio A; on the electric guitar with two humbuckers, Pickup Selector Bridge, Volume 10, Tone 7. Set Master and Output to your room. They are AI-assisted starting points; adjust them by ear on your own amp.
What are the In Bloom settings on a Fender Mustang LT25?
For the In Bloom guitar tone on a Fender Mustang LT25, set Amp Model 90S ROCK, Gain 5, Volume 7, Treble 6, Bass 5, Middle 6, Stomp ROCK DIRT, Mod None, Delay None, Reverb SMALL ROOM; on the electric guitar with two humbuckers, Pickup Selector Bridge, Volume 10, Tone 7. Set Master to your room. They are AI-assisted starting points; adjust them by ear on your own amp.
Can I get the In Bloom tone on my own amp?
Yes. The settings above cover 3 reference amps and any amp with the basic controls. For your exact rig, KnobMaster, an iPhone app, sets every knob of your own amp, guitar and pedals for In Bloom, using only the controls your gear has.
Get it for your exact rig
KnobMaster sets every knob of your own amp, guitar and pedals for this song.
Download KnobMaster on the App Store