(80 / 20 Bronze)
Designed to cope with demanding practices and schedules. Martin Authentic Acoustic SP 80/20 12 strings feature their highest tensile-strength core wire, and are tin-plated for enhanced corrosion resistance. These SP Acoustic 12 strings provide players with good tuning stability as well as a true and consistent tone, throughout gigs.
Manufactured with 80% copper and 20% zinc, these acoustic guitar strings yield a bright and ringing tone.
These Acoustic SP 12 strings include gauge 10-14-23-30-39-47, 10-14-10-12-18-27.
