Martin Authentic MA550T Acoustic Lifespan 2.0 Guitar Strings Medium 13-56 Phosphor Bronze

Martin® Authentic Acoustic® Lifespan® 2.0 strings are engineered with an advanced anti-corrosion treatment designed to help prevent buildup and corrosion from everyday playing—without compromising tone or feel. The result is long-lasting performance with the natural response players expect.

Our uncompromising standards for acoustic guitar tone are built into every detail of our string design and precision manufacturing process.

That’s why we make our own.