Martin Era Treated Acoustic Phosphor Bronze Medium 13-56 Guitar Strings

Engineered for exceptional tone and effortless playability, Martin Era strings raise the bar for phosphor bronze acoustic guitar strings. Drawing from Martins most advanced string technologies, they incorporate a patented Lifespan treatment for long-lasting corrosion resistance, Flexible Core construction for improved comfort and smooth fretability, and silk-wrapped ball ends that pay tribute to vintage instruments while honoring Martins rich heritage of handcrafted string making. The Artist Light gauge, created in partnership with six-time GRAMMY winner Jason Isbell, features a traditional SP core designed to capture the response and character of his signature sound.

Gauge and Tension

E B G D A E Tension

.013 .017 .026 .035 .045 .056 190.40