• Unleash the Power of the World's Top Brand: Martin, the leader in acoustic guitars, brings you the superior SP strings!
• Flawless Quality: Made in their own Navojoa, Mexico factory with perfect quality control and packed in long - lasting foil wrappers.
• Stunning Tones: High - tensile steel cores and premium bronze alloys create bold, powerful fundamental tones. 80/20 Bronze offers bright tones, while Phosphor Bronze adds warmth.
Martin Authentic Acoustic Superior Performance (SP) strings are the flagship and the most sought - after choice for acoustic guitar players. These strings come from the world's top acoustic guitar brand, and we know their expertise well. They are crafted in their dedicated factory in Navojoa, Mexico, with each set being as good as the last, packed in modern, long - shelf - life 'flow' foil wrappers. The high - tensile steel core is tin - plated for strength and corrosion resistance, and premium bronze alloys are used in the wrap wire for the best acoustic tone. Whether you choose 80/20 Bronze for its boldness or Phosphor Bronze for added warmth, these strings will enhance your guitar's sound.

These Martin acoustic guitar strings are perfect for both beginner and professional guitar players. Use them in live performances, studio recordings, or just for casual playing at home. The 80/20 bronze strings provide a bright and bold sound, while the phosphor bronze strings add a warm and smooth touch. They are made with high - tensile steel cores and premium bronze alloys. The strings come in a set of 11 - 52 gauges, offering a good balance of playability and tone.