D'Addario K411 LM Viola Strings

Professional Viola A String with a Powerful, Sweet Tone

The D'Addario Kaplan Forza Viola Single A String, Long Scale, Medium Tension is engineered for violists who want a single replacement A string that matches the rich tonal palette and superb bowing response of the full Kaplan Forza set. Built around a stranded steel core, this A string projects powerfully and dynamically while settling in quickly, giving players a clean, fast bow response and a balance of clarity and warmth across the dynamic spectrum. Sized to fit long-scale violas with a body length of 406–419 mm and a playing length of 380 mm, it suits advancing and professional players who need an adaptable A string that delivers control, expression, and a worry-free playing experience on a wide range of instruments.

Technical Specifications

• String Type: Single A string for viola
• Scale: Long Scale (body length 406–419 mm, playing length 380 mm)
• Tension: Medium
• Core: Stranded Steel
• Ending: Ball End
• Silking: Black and white at the ball end
• Country of Manufacture: USA (New York production facility)

Who It's For

The D'Addario Kaplan Forza Viola Single A String, Long Scale, Medium Tension is the right choice for advancing and professional violists who need a single replacement string that preserves the tonal character of the full Kaplan Forza set. It suits players working with long-scale violas (body length 406–419 mm) who want a stranded steel core string with a powerful, sweet tone, clean bow response, and quick break-in period for orchestral, chamber, solo, and studio playing. The medium tension offers a balanced feel that works across a wide variety of playing styles and instruments, while the ball-end fitting and black-and-white silking make installation straightforward on standard tailpiece designs. Designed, engineered, and manufactured in the USA at D'Addario's New York facility, this string pairs naturally with the rest of the Kaplan Forza line for violists seeking consistency across the full set.