Martin Authentic Acoustic SP® Guitar Strings Phosphor Bronze - (MA550) Medium 13-56 Tenor · Watts: 26

· Watts: 26

punchy mids

45-132 Regular Light gauge strings take our most popular bass gauge and add a low B-string

balanced with comfortable playability

delivers vintage-inspired tone and sustain

Martin Authentic Acoustic SP® Guitar Strings Phosphor Bronze - (MA550) Medium 13-56 Tenor · Watts: 26Martin 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.