The Martin Authentic Acoustic SP Phosphor Bronze Guitar Strings are extra stable, giving you a full balanced tone, with quicker response and increased tuning stability.

Martin Authentic Acoustic Superior Performance (SP) strings feature higher tensile strength and tin-plated core wire on all six strings that enables a fuller and more balanced acoustic guitar tone, quicker response to your picking and increased tuning stability. This SP set also features phosphor bronze to help resist corrosion. This set is designed to deliver more body and projection, maximizing what your acoustic has to offer. These strings boast a bright, crisp ringing sound with pleasing overtones.

Their world renowned impeccable standards for acoustic guitar tone are embedded in this string design and the precision manufacturing process delivers consistent performance. These strings come packaging to resist humidity changes, keeping your strings factory fresh. Available in several different string gauges. If you want time tested tone for your guitar, from a heritage brand, these Martin Authentic Acoustic SP Phosphor Bronze Strings will consistently deliver the tones you've come to know and love.

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