D'Addario EJ38 12st Lt 10-47

Phosphor Bronze was introduced to string making by D'Addario in 1974 and has become synonymous with warm, bright, and well balanced acoustic tone. D'Addario Phosphor Bronze strings are precision wound with corrosion resistant phosphor bronze onto a carefully drawn, hexagonally shaped, high carbon steel core. The result is long lasting, bright sounding tone with excellent intonation.

• D'Addario's most popular 12-string acoustic set with optimized gauges for balanced tone and comfortable playability
• Preferred for its warm, bright, and well balanced acoustic tone
• Environmentally friendly, corrosion resistant packaging for strings that are always fresh
• Made in the U.S.A. for the highest quality and performance


• String Gauges: Plain Steel .010/.10, .014/.014, Phosphor Bronze Wound .023/.008(p), .030/.012(p), .039/.018(p), .047/.027(w)

D'Addario is a manufacturer of musical instrument strings, primarily guitar strings, currently headquartered in Farmingdale, Long Island, New York. It is a family-owned and -operated business that is one of the largest string manufacturers in the world.

During the late 1940s and early 1950s (especially after the birth of rock and roll) nylon-stringed "classical" guitars were being eclipsed in popularity by the steel-string guitar. Some of the younger members of the family wanted to expand into steel strings, but Charles was reluctant to risk the family business on what he considered an uncertain market. In 1956 a new company (the Archaic Musical String Mfg Co.) began to make steel strings, run by Charles' son, John D'Addario Sr. The company made strings for several of the major guitar makers of the time, including Gretsch, D'Angelico, Martin, and Guild. In 1962 the two companies were merged under the name Darco.

The guitar had become the most popular instrument in the U.S., and the Darco company came up with many innovations in the manufacture of guitar strings, including the first automated equipment to wind strings and the first roundwound bass guitar strings.

In the late 1960s Darco was approached by Martin Guitars regarding a merger in order to pool resources and development efforts. While the partnership was beneficial for both companies, by 1974 the D'Addario family decided it was time to market strings under their own name, and the J. D'addario & Company corporation was formed.