D'Addario K414 LM Viola Strings

Kaplan Forza Viola Single C String — Professional Tone for the Full-Size Viola

The Kaplan Forza Viola Single C String, Long Scale, Medium Tension is engineered for violists who want the rich tonal palette and clean, fast bow response of the Kaplan Forza line on a single-string basis. Built around a stranded steel core — steel wires braided together into a cable — this C string blends strength with flexibility, giving the player a firm feel under the bow and a quick response that settles in fast. It is sized for long-scale violas with body lengths of 16 to 17 inches, the most common full-size viola dimension, and is tensioned at a medium weight that sits comfortably between the lighter and heavier Kaplan Forza options.

Designed, engineered, and manufactured at D'Addario's New York production facility, this single C carries the same construction as the strings inside the Kaplan Forza Viola String Set. The stranded steel core produces a balance of clarity and complexity across the dynamic spectrum, while the ball-end fitting makes installation at the tailpiece straightforward. Black and white silking at the ball end matches the visual identity of the wider Kaplan Forza family, and the medium tension gives the string a versatile character suited to solo, chamber, and orchestral playing alike.

Technical Specifications

• Instrument: Viola — designed for the full-size viola
• String Name: C — single replacement string for the C position
• Number of Strings: 1 — sold as a single C string, not a full set
• Scale: Long Scale — fits violas with body lengths of 16 to 17 inches
• Tension: Medium — balanced playing resistance for versatile repertoire
• Core: Stranded Steel Core — braided steel cable core for strength, flexibility, and bow response
• Ending: Ball End — quick and secure fitting at the tailpiece
• Country of Manufacture: USA — designed, engineered, and made in D'Addario's New York facility

Who This String Is For

The Kaplan Forza Viola Single C String is the right choice for advancing students, conservatory players, and professional violists who need a single replacement C that matches the rest of an existing Kaplan Forza set. It suits players working on a full-size viola with a 16 to 17 inch body who want the clarity, warmth, and projection that the Kaplan line is designed to deliver. Because it is sold as a single string rather than a full set, it is also a practical option for violists who break the C more often than the other strings, or who want to upgrade just the C while keeping their current A, D, and G. The medium tension offers a balanced feel that works across solo repertoire, chamber music, and orchestral excerpts, and the stranded steel core gives the bow a firm, responsive contact that rewards nuanced playing.