D'Addario H411 LM Viola Strings

Helicore Viola A String — Warm Tone and Quick Bow Response

The D'Addario Helicore Viola Single A String is a long-scale, medium-tension replacement string designed for violists who want a clear, focused tone without excessive brightness. At its heart is a multi-stranded steel core that gives the string its characteristic flexibility and quick bow response, while the smaller string diameter helps every stroke speak cleanly. Whether used as a single replacement or to balance a mixed set, this A string is engineered to settle in within hours and stay stable through long practice sessions and performances.

Crafted with premium materials and skilled workmanship, the Helicore A string is known for exceptional pitch stability and longevity. The string is packaged in a uniquely-designed sealed pouch that protects against the elements that cause corrosion, so it arrives ready to install and play. As part of the broader Helicore viola family, this A string pairs naturally with the matching D, G, and C strings from the same line.

Technical Specifications

• String Type: A (single replacement string)
• Core: Multi-stranded steel
• Tension: Medium
• Scale Length: Long scale — fits violas with body length 406 mm and over
• Ending: Ball end
• Silking: Blue and gold at the ball end
• Country of Manufacture: USA (New York)

Who It's For

The Helicore Viola Single A String is the right choice for violists who need a dependable replacement string that works across classical, jazz, bluegrass, and amplified playing styles. Its medium tension suits players who want a balanced feel under the bow without the resistance of a heavy string or the looseness of a light option, making it appropriate for advancing students, dedicated amateurs, and working professionals alike. The long-scale designation means it is built for full-size violas with a body length of 406 mm or more, which covers the majority of adult instruments. Because Helicore strings are designed, engineered, and manufactured in the USA to strict quality controls, players can rely on consistent performance string after string.