Dial in a clear, warm, and focused A string that responds instantly under the bow. The D’Addario Helicore H511 (4/4H) Cello A String pairs a multi-stranded high-carbon steel core with precision alloy windings to deliver quick bow response, excellent pitch stability, and a broad dynamic range. Scaled for full-size cellos with a 27.5" (700 mm) playing length, this heavy-tension A adds extra punch and projection while retaining the signature Helicore warmth—a favorite for orchestra, chamber, solo, and alternative styles.

Why cellists choose Helicore H511 (Heavy)

• Defined tone: Clear articulation and centered pitch for confident entrances and solos

• Fast, flexible response: Speaks quickly for spiccato, détaché, and legato lines

• Rock-solid tuning: Steel core resists humidity/temperature swings for stable intonation

• Versatile voice: Blends smoothly with many cello models and string mixes

• Long life: Durable construction for consistent performance session after session

Specifications

• Brand / Series: D’Addario Helicore

• Model: H511 4/4H (A string, heavy tension)

• Instrument / Size: Cello, 4/4 (full size)

• Playing Length: 27.5" (700 mm)

• Core: Multi-stranded high-carbon steel

• Windings: Precision alloy

• End: Ball end (tailpiece/fine-tuner compatible)

• Intended Use: Orchestral, chamber, solo, contemporary styles

• What’s Included: Single A string (not a set)