D'Addario Zyex Violin StringsD'Addario Zyex Violin Strings are composite core strings crafted with a new, highly refined configuration of Zyex synthetic core material. This upgraded design allows the player to maintain better control of their tone and nuance, all while maintaining an overall warm tone quality with fast break in time and excellent pitch stability. Zyex composite strings have a warmer sound than most other synthetic core strings, making them excellent for use on