Martin® Authentic Acoustic® Superior Performance SP® strings feature higher tensile strength and tin-plated core wire on Allen six strings, allowing for a fuller and more balanced tone, faster response and greater 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. All of our items have a 30-day return policy without explanation. Notes, reading and software are excluded from the exchange. The General Terms and Conditions of Zoundhouse GmbH & Co. KG apply. When purchasing multiple items: Add the items to your shopping cart and select “Request total from buyer” at the top right. If you intend to buy multiple items: put them into your shopping cart and choose “combined shipping (.
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