EJ50 hard tension classical strings featuring black nylon trebles are a popular choice for their rich tone‎,‎ increased resistance‎,‎ and strong projection‎.‎

Pro‎-Arte‎,‎ the world‎'‎s most popular classical strings are D‎'‎Addario‎'‎s premium classical guitar string sets‎.‎ All Pro‎-Arte treble strings are sorted by a sophisticated computer‎-controlled laser machine which performs diameter and tension measurements‎,‎ ensuring true‎-sounding‎,‎ precise trebles in every set‎.‎ Pro‎-Arte basses are wound using silver‎-plated copper on a multi‎-filament nylon core for consistent and warm‎,‎ yet projecting tone‎.‎

D‎'‎Addario‎,‎ the world‎'‎s largest manufacturer of musical instrument strings‎,‎ is known as The Players Choice with a reputation for unsurpassed quality and consistency‎.‎ D‎'‎Addario‎'‎s innovative‎,‎ packaging reduces waste and provides protection from corrosion‎.‎ All D‎'‎Addario strings are manufactured in the U‎.‎S‎.‎A‎.‎ using proprietary‎,‎ digitally controlled‎,‎ state‎-of‎-the‎-art machinery for unmatched performance‎,‎ set after set‎.‎