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DTKR31

DTKR31 Thomastik Classic S Single A String


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The Thomastik-Infeld DTKR31 Classic S (Classic N Rope Core) is an individual replacement A (5th) string engineered specifically for classical and nylon-string guitars. Handcrafted in Vienna, this high-performance string features a highly flexible steel rope core wrapped in precision silver-plated copper flat ribbon winding, bringing acoustic-style punch, enhanced sustain, and crisp clarity to classical instruments without exceeding safe tension limits.

Designed to deliver supple, low playing tension that safeguards traditional classical fan bracing, tie-block bridges, and neck joints, the DTKR31 provides an ultra-smooth tactile feel with zero finger squeak and reduced fret wear. Australian classical, fingerstyle, and folk guitarists rely on genuine Thomastik-Infeld single strings to maintain spot-on intonation, balanced string-to-string projection, and dependable tuning stability.

Features

  • Genuine single replacement A (5th) string from the renowned Classic S / Classic N Rope Core series
  • Engineered specifically to bring acoustic-style projection and resonance to classical nylon-string guitars
  • Highly flexible steel rope core construction maintains low playing tension to protect delicate classical bracing and bridges
  • Silver-plated copper flatwound surface minimizes finger noise, hand friction, and fretboard wear
  • Delivers deep fundamental bass thump, warm midrange presence, and rich harmonic overtones
  • Ideal as an individual replacement string or for building custom hybrid classical setups

Specs

  • Model: DTKR31 (KR31)
  • Instrument: Classical Guitar / Nylon-String Acoustic
  • Series: Classic S / Classic N Rope Core
  • String Type: Single String (Wound 5th / A String)
  • Gauge: 0.031" (0.80 mm)
  • Core Material: Highly Flexible Steel Rope Core
  • Winding Material: Silver-Plated Copper Flatwound
  • String Tension: 6.60 kg / 14.50 lb
  • Origin: Made in Austria