Experience the next generation of string technology with D’Addario XS Phosphor Bronze. As our longest-lasting acoustic string to date, the XS series combines the iconic warm, balanced tone of phosphor bronze with an ultra-thin film coating for an uncommonly smooth feel. Engineered with a high-carbon NY Steel core and Fusion Twist technology, these 10-47 Extra Light gauge strings offer unmatched break strength and rock-solid tuning stability. Play longer and bend further with strings designed to survive the most demanding sessions.