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 donâ€™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 SPÂ® strings offer excellent tuning stability, corrosion resistance and great playability.
- 80/20 BRONZE
- LightÂ Â Â .012Â Â Â .016 Â Â Â .025Â Â Â .032Â Â Â .042Â Â Â .054Â Â Â Tension = 167.3Â Â Â MA140