Martin Authentic Acoustic SP® 80/20 Bronze guitar strings are part of Martin’s improved range of acoustic guitar strings. Martin Authentic Acoustic SP® strings are engineered with the performer in mind and stand up to rigorous practice and performance schedules. They are made with a high tensile-strength core wire, then tin-plated for added corrosion resistance. Combined with highest quality wrap wire they provide consistent true tone that you can count on song after song.
Martin Authentic Acoustic SP® strings offer excellent tuning stability, corrosion resistance and great playability