An ultra-fine layer of D'Addario's exclusive EXP Coating is bonded to the Phosphor Bronze wrap wire, which is then wound onto the hex-shaped core wire, resulting in a built-in barrier against corrosion and wear. EXP's sound bright and clear with string tone that lasts 3-4 times longer than traditional strings.

EXP Means Extended Play
Imagine putting on a set of strings and having them sound fresh and bright 3 to 4 times longer than traditional strings. Well, it's now a reality with D'Addario EXP Coated strings. Available in a wide variety of alloys and gauges, EXPs not only offer extended life, but deliver the exceptional tone you've come to expect from D'Addario. Whether you're the casual player who doesn't change strings often, an avid collector who owns several guitars, or a working player who changes strings for every gig, EXP strings are perfect for you.

What makes EXP strings different?

D'Addario reinvented the way extended play strings are made. They apply an ultra-fine EXP corrosion-resistant coating to the wrap wire before it's wound onto the core. The EXP Coating protects your strings from premature corrosion and wear that can sap the life out of your sound. Since the EXP Coating is so fine, it's virtually undetectable and allows strings to maintain their natural, round wound feel. Finally -- a string that delivers it all - great tone, natural feel, and longer life!

An ultra-fine layer of D'Addario's exclusive EXP Coating is bonded to the 80/20 Bronze wrap wire… read more which is then wound onto the hex-shaped core wire, resulting in a built-in barrier against corrosion and wear. Strings retain their inherent extra-bright tone and natural feel, yet last 3-4 times longer than traditional strings. These are D'Addario's brightest-sounding extended play strings.

D'Addario tells the story of their EXP coated strings:

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