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Martin Authentic Acoustic SP Phosphor Bronze 3 Pack Medium, 13-56 Overview

Designed to cope with demanding practices and schedules. Martin Authentic Acoustic SP Phosphor Bronze strings feature their highest tensile-strength core wire, and are tin-plated for enhanced corrosion resistance. These Acoustic SP strings provide players with good tuning stability as well as a true and consistent tone, throughout gigs.
Manufactured with copper, tin and phosphorous, Phosphor Bronze strings yield a dark and slightly warmer tone that 80/20 strings. This set includes a three set of six guitar strings. These Acoustic SP strings include gauge 13-17-26-35-45-56.



  • Set of 6 acoustic guitar strings
  • Pack of 3
  • Medium gauge 13-56
  • Metal wrap wire composition of copper, tin and phosphorous
  • Tin plating offers added corrosion resistance


  • Gauges: 13-17-26-35-45-56
  • Tension: 190.9

MA150 3 Pack

SKU: 729789557962
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