Martin MA550 Authentic Acoustic SP Acoustic Strings Phosphor Bronze – 13-56 Medium

C. F. Martin & Co.® has been Inspiring Musicians Worldwide® for nearly two centuries with their superior guitar and string products. Martin guitars and strings remain the choice for musicians around the world for their unrivaled quality, craftsmanship, and tone. Throughout the company’s long history, Martin products can be seen and heard across all genres of music and in all segments of pop culture, from concert and theater stages to television and movies. With an unwavering commitment to environmental sustainability and responsible manufacturing practices, Martin continually drives the acoustic guitar market forward, introducing innovative features that have become standards across the industry. These groundbreaking innovations include the introduction of X-bracing, the 14-fret guitar, and the “Dreadnought” size guitar. Martin has also led innovations in strings, such as introducing the first high-tensile strength steel-string core wire; the first nickel acoustic strings (Martin Retro®); the proprietary Titanium Core strings; and now the groundbreaking, new Authentic Acoustic line, which offers unmatched stability, tone, comfort, and longevity.