D'Addario Classics utilize their precision rectified nylon trebles - each ground using D'Addario's proprietary centerless grinding technique. Roundness and dimension control are unsurpassed, ensuring absolutely perfect intonation. Classics are known for their warmer, mellower tone and
slightly textured feel.

EJ29's are a moderate tension classical guitar string set containing silver on nylon wound strings and rectified clear nylon treble strings for highly accurate intonation.