D'Addario J911 LM Viola Strings

Prelude Viola A String — Warm, Stable Tone for Long-Scale Violas

The D'Addario Prelude Viola Single A String, Long Scale, Medium Tension is a replacement A string purpose-built for full-size violas with body lengths of 16 to 16.5 inches. At its heart is a solid steel core — the same construction that has made Prelude the world's best-selling steel-core orchestral string line — paired with a nickel winding that produces a warm, mellow tone with clear projection. Unlike traditional gut or synthetic-core strings, this steel-core design resists pitch drift caused by temperature and humidity swings, so students and intermediate players can count on stable tuning from the practice room to the recital stage. The medium tension strikes a balance between bow response and fingerboard comfort, making it a natural upgrade or replacement for violists seeking reliable, educator-approved performance without the higher cost of advanced synthetic-core strings.

Technical Specifications

• String Designation: A (single replacement string)
• Number of Strings: 1
• Scale: Long Scale — body length 16–16.5" (406–419 mm), playing length 380 mm
• Tension: Medium
• Core Material: Solid Steel Core
• Winding: Nickel Wound
• Ending: Ball End
• Instrument: Viola
• Origin: Designed, engineered, and manufactured in the USA

Who It's For — Ideal Players and Playing Styles

This replacement A string is the right choice for students, educators, and advancing violists who need a dependable, warm-sounding string that holds up to daily practice and frequent bow work. Its medium tension and balanced feel suit classical repertoire, fiddle styles, jazz, and alternative genres, making it a flexible single-string replacement for players who already use Prelude across their instrument. The ball-end design simplifies installation on standard tailpieces, and the sealed packaging keeps the string fresh until it's ready to mount. Whether replacing a worn A on a school-owned viola or building a custom set around Prelude's steel-core character, this long-scale, medium-tension string delivers the educator-approved blend of tone, durability, and value that has defined the Prelude line.