Martin "Authentic" SP Acoustic Guitar Strings

Martin Authentic Acoustic SP Strings

Built for tone, performance, and reliability, Martin Authentic Acoustic SP strings are made with higher tensile strength and tin-plated core wire across all six strings—giving you a fuller, more balanced sound, improved tuning stability, and quick response.

Designed and manufactured in-house to meet Martin’s uncompromising standards, these strings reflect the same commitment to quality that goes into every Martin guitar. Because when it comes to acoustic tone, details matter.