D'Addario H511 1/4M A 1/4 Cello Strings

Helicore Cello A String — 1/4 Scale, Medium Tension

The D'Addario Helicore Cello Single A String, 1/4 Scale, Medium Tension, is a fractional-size replacement string engineered for student cellists and small-instrument players who need the response and tonal character of the flagship Helicore line without committing to a full set. Built around a multi-stranded steel core overlaid with a titanium winding, it uses the same construction as the 4/4 Helicore A string, scaled down for 1/4 cellos. The all-metal architecture renders the string impervious to fluctuations in humidity and temperature, so it stays stable from the practice room to the recital stage. Quick bow response comes from the smaller string diameter, so attacks speak immediately without the player having to "wake up" the string. The result is a warm, clear tone that sits remarkably close to traditional gut or synthetic core strings while offering far greater tuning stability.

Technical Specifications

• Instrument: Cello
• String Name: A (1st string)
• Scale Size: 1/4
• Tension: Medium
• Core: Stranded steel (multi-strand high-carbon steel)
• Winding: Titanium
• End Fitting: Ball end
• Country of Manufacture: USA

Who It's For

This 1/4-scale Helicore A is the right choice for student cellists, advancing beginners, and teachers who need a reliable replacement A string for a fractional cello. It suits players who want the bright, powerful projection and quick response of a steel-core string rather than the softer feel of a traditional gut or synthetic core. The medium tension offers balanced bow resistance that works equally well for classical studies and ensemble work where projection matters. Because the all-metal construction tolerates humidity and temperature swings, the string is well suited to young players whose instruments move between home, school, and lesson studios. Single-string packaging also makes it practical for parents and teachers who only need to replace one worn string rather than the full set.