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. Martin's impeccable standards for acoustic guitar tone are embedded in their string design and precision manufacturing process.
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The Authentic Acoustic strings:
- are designed for sustain tuning stability
- are designed resist corrosion by having tin plating on all six strings
- have high tensile steel core wire that is the best in the industry
- Shipping profile 1
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Haven't put them on yet, but based on past experience these strings seem to be just fine!