These strings are engineered with the performer in mind and they will always stand up to rigorous practice and performance schedules. We start with our highest tensile-strength core wire, then tin-plate it on all six strings for added corrosion resistance; because what you don’t see matters! When coupled with our highest quality wrap wire you get consistent true tone that you can count on song after song. Available in 80/20 Bronze and 92/8 Phosphor Bronze. Martin Authentic Acoustic SP strings offer excellent tuning stability, corrosion resistance and great playability.

MPN: 41Y18MA140
UPC: 729789557795

• 80/20 Bronze
  
• Light
  
• 12-16-25-32-42-54
  
• Highest tensile-strength core wire tin-plated on all six strings for added corrosion resistance
  
• Excellent tuning stability, corrosion resistance and great playability.