Phosphor Bronze wound strings were introduced in the early Seventies and have become the most popular acoustic string. Phosphor bronze wire is made from approximately 92% copper, 7% zinc and 1% phosphorous. Phosphor Bronze provides nice highs and lows, as well as pleasant subtle overtones. Phosphorous is used to help reduce tarnish and corrosion
They have out performed all other brands.
As a full time musician I need the best and most reliable strings out there. These are those strings. They hold their tone forever and last longer than any other string I've ever used as well almost never breaking. Recently I had switched to d'addario because I just couldn't find Curt Mangan anywhere near me and that was the biggest mistake ever. In one show I went through three sets of strings because I kept breaking them, which has never once happened to me while using Curt Mangan which is why I quickly switched back by ordering these. Also the feel of these strings is like no other. They have a silky feel and play fast. The tone is unmatched by anything and lasts so long it's insane. Overall these are by far the best strings on the market! Plus the six pack gives them to you at a discounted price which is just awesome!!