Martin's Authentic Acoustic series is designed with the performer in mind. Martin's tin-plating on all 6 strings makes them more resistant to steel, even without being treated; because it's the little things that matter when you're a leader in acoustic strings. Excellent tuning stability and tons of playability and playability is exactly what Martin strings have. These 80/20 bronze strings deliver a crisp sound with tons of punch and top end.
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