D’Addario Viola Strings are globally recognized for their innovative engineering, consistent quality, and remarkable value. Offering a diverse range of string technologies—from the world-renowned Helicore steel core to the advanced synthetic Zyex and professional Kaplan lines—D’Addario provides a tailored solution for every level of player. Their strings are celebrated for their exceptionally fast break-in time, rock-solid tuning stability, and resistance to environmental changes, making them a reliable choice for the classroom, the stage, and the recording studio alike.
The D’Addario lineup is designed to address specific tonal needs: the Kaplan series offers professional-grade power and complexity (with Amo for warmth, Vivo for brilliance, and Forza for projection), while Helicore remains the industry standard for its slim diameter and lightning-fast response. For those seeking a gut-like richness with synthetic durability, the Zyex series provides a “meaty” and sophisticated tone. Whether you are a student looking for ease of play or a professional demanding high-performance projection, D’Addario’s commitment to precision ensures a balanced, resonant voice for any viola.

Kaplan Vivo Strings are crafted to deliver a focused, bright tone with a faster response, ideal for players seeking clarity and enhanced projection. Available in various sizes and gauges, Vivo strings provide a quick break-in period and a dynamic, responsive feel.

Kaplan Amo Strings offer a bold, warm sound designed to complement brighter instruments. With a flexible response and quick settling time, Amo strings bring out a rich tonal palette, making them a preferred choice for players seeking warmth and depth.

Kaplan Forza Strings offer a bold, brilliant sound designed to complement warmer instruments. With a powerful response and quick settling time, Forza strings provide extraordinary clarity and projection, making them the preferred choice for players seeking a vibrant, assertive tone that cuts through the ensemble.

Zyex Strings are a synthetic composite core string. Zyex tends to sound a bit brighter and have less tension than the Helicores.

Helicore Strings are steel strings and offer good value.