CLASSIC GUITAR STRINGS SET D'Addario Pro-Arté Dynacore EJ44TT ProArte Dynacore, Titanium Trebles, Normal Tension strings for classical guitar. Trebles: 0290, .0333, .0416 Strings: .030, .036, .047 - D'Addario Pro-Arté Dynacore Classical Guitar Strings have a revolutionary new core construction with an innovative core manufacturing process with braided multifilament , which provides a more flexible feeling and quick response. The new strings offer a rich, round tone, full of warmth and clarity, and improved diameter control to increase tuning stability and unparalleled intonation consistency. The durable composite core material provides long string life, allowing a better balance between bass and treble.