D’Addario Phosphor Bronze acoustic guitar strings and enjoy your instrument like never before! These strings utilize phosphor bronze wrap wires, contributing a warm and vibrant tone that suits most playing applications. Introduced to the D’Addario line in 1974, Phosphor Bronze strings have since become a mainstay among hobbyists and professionals alike. Phosphor bronze strings are known for their impressive durability — a trait especially important for players who put in a lot of hours on the fretboard. If you’re looking for a set of warm acoustic guitar strings, then grab a set of D’Addario Phosphor Bronze acoustic guitar strings.