The Twelfth Fret ~ Since 1977 ~

Martin Authentic Acoustic SP Guitar Strings

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. 

These strings are engineered with the performer in mind and they will always stand up to rigorous practice and performance schedules. Martin start with the highest tensile-strength core wire, then tin-plate it on all six strings for added corrosion resistance. When coupled with Martin’s highest quality wrap wire you get consistent true tone that you can count on song after song. 
Available 92/8 Phosphor Bronze.

Martin Authentic Acoustic SP strings offer excellent tuning stability, corrosion resistance and great playability.



Martin Behind the Design: A look at Martin Authentic Acoustic 

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