D'Addario was the first to use Phosphor Bronze in acoustic guitar strings in 1974. Today, Phosphor Bronze is played all over the world and is considered the standard for acoustic guitar strings, thanks to its wonderful sound balance and acoustic warmth.

The innovative Phosphor Bronze acoustic guitar strings are precisely wound with phosphor bronze wire over a high-carbon steel core, providing tonal flexibility suitable for all acoustic styles and musical genres.

Optimal for DADGAD tuning, this 13-56 True Medium set features a smaller diameter for the 3rd, 4th, and 5th strings than D'Addario's traditional Medium set, providing a more balanced sound and volume.