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Under the Bridge — Red Hot Chili Peppers1 / 2
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Under the Bridge Guitar Tone Settings — Red Hot Chili Peppers

Red Hot Chili Peppers · 1990s · rock

studio

Original Recording

Guitar
1962 Fender Stratocaster (original, sunburst, rosewood board)
Pickups
Fender single-coil pickups (vintage spec, 1962 Stratocaster)
Amp
Fender H.O.T. Guitar Combo Amplifier
Pickup Position
Neck pickup

Studio recording, 1991 (Blood Sugar Sex Magik). Frusciante used his 1962 Stratocaster into a Fender H.O.T. practice amp for the riff/intro section. No evidence of Marshall or other amps for this part; Telecasters were used more in later eras. The Dyna Comp compressor was used for the intro/riff. Chorus effect is clearly audible and widely attributed to a Boss CE-1 or CE-2 (or similar).

Amp Settings

Mids
6.5
Bass
5.5
Gain
2.5
Reverb
2.5
Treble
7
Presence
5

Effects Chain

  • MXR Dyna Comp · compression
  • Boss CE-1 Chorus Ensemble (or similar chorus pedal) · chorus

Guitar → MXR Dyna Comp → Boss CE-1 Chorus (or similar) → Fender H.O.T. Combo Amp (spring reverb on)

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Tone Character

  • clean and glassy
  • bright and articulate
  • slightly compressed
  • chorus shimmer
  • dynamic and touch-sensitive
  • warm but not muddy
  • percussive and funky
  • studio clarity
  • low gain, edge-of-breakup on hard strums

Notes & Caveats

  • ⚠️Exact amp knob settings for the Fender H.O.T. are not documented; values estimated based on typical clean Fender settings and forum discussions.
  • ⚠️Chorus pedal model is not 100% confirmed for the studio recording, but chorus effect is clearly audible and widely attributed to Boss CE-1 or CE-2.
  • ⚠️Compressor (MXR Dyna Comp) is confirmed for the intro/riff by Equipboard.
  • ⚠️No evidence of delay, flanger, phaser, or wah in the riff section.
  • ⚠️Pickup choice inferred from tone and typical Frusciante practice; some sources mention neck pickup for warmth and clarity.
  • ⚠️Presence control estimated as Fender H.O.T. may not have a dedicated presence knob; set to neutral.
  • ⚠️Settings cross-referenced with genre and era conventions for accuracy. John Frusciante used a Fender Stratocaster into a clean/edge-of-breakup Fender amp (likely a Silverface Twin Reverb or similar) for 'Under the Bridge,' favoring a bright, mid-forward, chimey clean tone with subtle reverb. The settings reflect his preference for clarity, warmth, and the song's signature clean, expressive sound.

Sources