EJ45, normal tension, is D’Addario’s best-selling classical set,
preferred for its balance of rich tone, comfortable feel and dynamic
projection. All Pro-Art treble strings are computer controlled by an
X-Y laser micrometer which performs diameter and tension measurements,
ensuring true-sounding, precise trebles in every set. Pro-Art basses
are wound using silver-plated copper on a multi-filament nylon core for
consistent and warm, yet projecting tone.