Martin Strings MA550 Authentic Acoustic SP Medium 13-56 Bulk Box (25 Sets)

Martin Strings MA550 Authentic Acoustic Medium 13-56 Bulk Box (25 Sets)

Authentic Acoustic SP® Guitar Strings Phosphor Bronze


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.

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