D'Addario H313 4/4H D Violin Strings

Heavy-Tension D String for Full-Size Violin

The D'Addario Helicore Violin Single D String is a heavy-tension replacement string designed specifically for 4/4 scale violins. Built around a multi-stranded steel core rather than traditional gut or solid steel, this D string delivers a clear, warm tone with fast bow response and exceptional tuning stability. The stranded core construction provides a flexible feel under the bow while maintaining the projection needed for both solo and ensemble playing.

As part of D'Addario's Helicore family, this single D string is crafted with the same computer-controlled winding technology used across the full set. The heavy tension option offers greater volume potential and a fuller sound, making it well-suited for players who need extra projection in larger acoustic spaces or when playing with amplified setups. The titanium winding provides a warm, clear tonal character that sits well between the G and A strings.

Technical Specifications

• String Type: Single replacement D string
• Instrument: Violin (4/4 scale)
• Scale Length: 328 mm (13 inches)
• Core: Multi-stranded steel
• Tension: Heavy
• Ending: Ball end
• Winding: Titanium wound
• Sound Profile: Warm and clear
• Bow Response: Fast
• Country of Manufacture: USA

Who This String Is For

This heavy-tension D string is the right choice for violinists who need a reliable replacement with greater projection and volume potential. It suits players across a wide range of styles, from classical and chamber music to bluegrass, folk, and amplified performance contexts where the stranded steel core's quick bow response and tuning stability shine.

Intermediate to advanced players will appreciate the heavy tension's resistance and tonal weight, particularly when balancing against lighter strings on the violin. The stranded steel core also makes this string a practical option for students transitioning from beginner strings, offering durability and consistency that withstands regular practice and performance schedules. Its compatibility with standard ball-end fittings means it drops into most violins without modification.