D'Addario H411 LH Viola Strings

Helicore Viola A String — Steel-Core Replacement for Long-Scale Violas

The D'Addario Helicore Single A String, Long Scale, Heavy Tension is a stranded-steel-core replacement A designed for full-size violas. Helicore viola strings are crafted with a multi-stranded steel core that produces a clear, warm tone with a smaller string diameter for quick bow response, addressing the sluggish feel some players experience with traditional gut or synthetic-core strings under the bow. As a heavy-tension option, this A string gives players a firmer feel and stronger projection than the lighter tensions in the same line, making it a logical upgrade for advancing students, intermediate players, and professionals who want more resistance and volume from the A. The single-string format means a worn or broken A can be replaced individually rather than swapping out the full set, which is useful when only one string has lost its tone or pitch stability.

Technical Specifications

• Instrument: Viola
• String: A (single replacement string)
• Core: Stranded Steel
• Tension: Heavy
• Scale: Long Scale
• Ending: Ball End
• Country of Manufacture: USA (New York production facility)

Who This A String Is For

The Helicore Single A String, Long Scale, Heavy Tension is built for viola players who already run a Helicore setup and need to replace just the A, or for those moving up from a lighter tension who want more bow resistance and projection. It suits traditional classical repertoire, alternative styles, fiddle, and electric viola work where quick bow response and a clear, focused articulation matter most. D'Addario lists the line as ideal for students, intermediate players, and professionals, and the heavy-tension A in particular tends to appeal to advancing students who have outgrown a lighter string and to players who prefer a firmer left-hand feel. Designed, engineered, and manufactured in the USA at D'Addario's New York production facility, this A string is built to match the rest of the Helicore viola family in tone and response.