MARTIN MA550 MEDIUM 13 - 56 PHOSPHOR BRONZE AUTHENTIC ACOUSTIC SUPERIOR PERFORMANCE SP® GUITAR STRINGS
MARTIN MA550 MEDIUM 13 - 56 PHOSPHOR BRONZE AUTHENTIC ACOUSTIC SUPERIOR PERFORMANCE SP® GUITAR STRINGS
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MARTIN MA550 MEDIUM 13 - 56 PHOSPHOR BRONZE AUTHENTIC ACOUSTIC SUPERIOR PERFORMANCE SP® GUITAR STRINGS

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Martin® Authentic Acoustic® Superior Performance SP® strings feature higher tensile strength and tin-plated core wire on all six strings that enable a fuller and more balanced tone, quicker response and increased tuning stability. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process. That's why we make our own.

  • 92/8 phosphor bronze
  • Medium
  • 13-17-26-35-45-56
  • Highest Tensile-Strength core wire tin-plated on all six strings for added corrosion resistance
  • Excellent tuning stability, corrosion resistance and great playability