Three sets of Martin Authentic Acoustic SP Light strings (MA540), gauged 12-54, with tin-plated core wire on all six strings for higher tensile strength and steadier tuning.
Martin® Authentic Acoustic® Superior Performance SP® strings feature higher tensile strength and tin-plated core wire on all six strings that enable a fuller and more balanced tone, quicker response and increased tuning stability. Our impeccable standards for acoustic guitar tone are embedded in our string design and precision manufacturing process. That's why we make our own.
