Martin MA540 Authentic Acoustic SP Phosphor Bronze 12-54

We currently have 86 in stock.



Designed to cope with demanding practices and schedules. Martin Authentic Acoustic SP Phosphor Bronze strings feature their highest tensile-strength core wire, and are tin-plated for enhanced corrosion resistance. These Acoustic SP strings provide players with good tuning stability as well as a true and consistent tone, throughout gigs. 
Manufactured with copper, tin and phosphorous, Phosphor Bronze strings yield a dark and slightly warmer tone that 80/20 strings. These Acoustic SP strings include gauge  12-16-25-32-42-54.

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