D'Addario J813 4/4M D Violin Strings

Replacement D String for 4/4 Scale Violin

The D'Addario Prelude Violin Single D String, 4/4 Scale, Medium Tension is a standalone replacement string for full-size violins, built around a solid steel core that the manufacturer describes as the warmest-sounding option in the Prelude student line. Because the core is steel rather than synthetic gut, the string is unaffected by temperature and humidity changes, holding its tuning through classroom and rehearsal environments where climate control is limited. Medium tension is the tension D'Addario recommends for the majority of players, sitting between light and heavy options in the Prelude range.

Sold as a single replacement part rather than a full set, this string is a cost-effective way to refresh a worn or broken D string without replacing the other three strings on the instrument. The ball-end fitting is compatible with the fine tuners fitted to most student and intermediate violins, and the uniquely designed sealed pouch provides protection from the elements that cause corrosion while the string sits in storage between changes. All D'Addario strings are designed, engineered, and manufactured in the USA.

Technical Specifications

• String Name: D — single replacement string for the D position on a four-string violin
• Scale: 4/4 (playing length 328 mm) — fits full-size violins
• Tension: Medium — optimized for the needs of a majority of players
• Core: Solid Steel — unaffected by temperature and humidity changes
• Ending: Ball End — fits standard fine tuners
• Packaging: Sealed Pouch — protects against corrosion between changes
• Origin: USA — designed, engineered, and manufactured in the USA

Who It's For

The D'Addario Prelude Violin Single D String is the right choice for student violinists, school music programs, and rental fleet operators who need a reliable, affordable replacement D string for a full-size (4/4) violin. It suits players who already run a full Prelude set and need to swap out a single worn or broken string without buying a complete new set, as well as teachers and parents maintaining beginner instruments between lessons. The solid steel core delivers the projection and bow response that helps a developing player hear their tone clearly, while medium tension keeps the playing feel comfortable for hands still building finger strength. Because the string is unaffected by temperature and humidity changes, it is well suited to practice rooms, school stages, and other environments where climate control is inconsistent.