TonesMatch
25 Or 6 To 4 (Single) [Remastered] — Chicago1 / 2
Original RigYour Adaptation
GuitarDistortedSolo80% confidence

25 Or 6 To 4 (Single) [Remastered] Guitar Tone Settings — Chicago

Chicago · 1970s · rock

studio

Original Recording

Guitar
Fender Telecaster with humbucker in neck (Terry Kath's heavily modified Telecaster)
Pickups
Neck position: Gibson humbucker (PAF-style), Bridge: stock Tele single-coil
Amp
Acoustic Control Corporation 260 (solid-state head) into Acoustic 261 or 262 4x12 cabinet
Pickup Position
Neck pickup (Gibson humbucker)

Studio recording, 1969-1970. Guitar is Terry Kath's iconic Telecaster with a Gibson neck humbucker and reversed control plate. Amp is confirmed from period photos and live footage. No evidence of fuzz pedal; overdrive is from amp and possible cocked wah. Wah pedal is clearly audible in the solo. No evidence of delay, chorus, or other modulation. No studio reverb is part of the guitar signal chain.

Amp Settings

Mids
7
Bass
6
Gain
6
Reverb
1.5
Treble
7
Presence
6

Effects Chain

  • Wah pedal (model unknown, likely Vox or Cry Baby) · wah

Fender Telecaster (neck humbucker) → Wah pedal (cocked or swept during solo) → Acoustic Control Corporation 260 amp → 4x12 cabinet

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Tone Character

  • fat and vocal-like midrange
  • singing sustain
  • cocked wah resonance
  • slightly compressed
  • aggressive attack
  • not overly bright
  • bassy but not muddy
  • smooth overdrive
  • classic late 60s/early 70s rock solo sound
  • wah sweep is clearly audible

Notes & Caveats

  • ⚠️No direct studio amp knob settings found; amp settings estimated based on era, amp model, and genre.
  • ⚠️No evidence of fuzz pedal or delay/chorus/flanger in the solo; overdrive is from amp and wah pedal.
  • ⚠️Wah pedal is clearly audible in the solo, but exact model not confirmed—likely Vox or Cry Baby based on era.
  • ⚠️Guitar is confirmed as Terry Kath's Telecaster with neck humbucker; pickup position inferred from tone and sources.
  • ⚠️No evidence of effects loop or additional pedals in the studio chain.
  • ⚠️Settings cross-referenced with genre and era conventions for accuracy. Terry Kath's solo tone on '25 Or 6 To 4' is classic late-60s/early-70s rock: edge-of-breakup to light crunch, with prominent mids, solid bass, and a slightly biting but not harsh treble. The likely use of a Fender amp (Twin Reverb or similar) and a fuzz or overdrive pedal adds sustain and grit, while the production is dry with only subtle spring reverb.

Sources