D'Addario J4604C Single Guitar String

Pro-Arte Composite D String for Classical Guitar

The D'Addario J4604C Pro-Arte Nylon Classical Guitar Single String is a dedicated replacement for the fourth (D) string position on a classical guitar. As part of D'Addario's long-running Pro-Arte Composite series, this single string uses silver-plated copper winding over a round-wound construction to deliver the warm, articulate response the line is known for. Buying a single replacement string makes practical sense when only one string has broken or worn out, avoiding the cost of replacing an entire set. The "C" suffix in the SKU identifies this as a Composite bass string, distinct from the standard Pro-Arte nylon-core basses.

Technical Specifications

• String Position: D (4th string)
• Material: Silver-plated copper
• Winding Type: Round Wound
• Tension: Hard
• End Type: Tie-end
• Compatible With: Classical Guitar
• Made In: USA

Who It's For

The J4604C is the right choice for classical guitarists who need a single replacement D string in hard tension without buying a full set. Hard tension suits players who prefer a brighter, louder response with stronger attack — common in flamenco-influenced playing, lead classical lines, and projection-focused performance settings. The tie-end construction matches traditional classical guitars that anchor strings at the bridge, so it pairs naturally with standard nylon-string classical instruments. It also works for players building a custom Pro-Arte set by mixing individual strings to dial in their preferred tension and tonal balance.