1974 was the year D'Addario was the first to try the Phosphor Bronze material in their acoustic string manufacturing. The success was a fact and Phosphor Bronze strings have become synonymous with a great tone and long life. Chosen by most musicians for both live and studio.
- .009, .009, .013, .013, .021, .008, .029, .011, .036, .016, .045, .026
- For 12-string guitar