Detail 01
Single A string
Only the top string. The D, G and C are sold separately, so a full restring costs several times this.

Independent shopping perspective
A single Spirocore A string for 4/4 cello. A replacement string, not a full set — buy it when the A goes or you want to change one string.

Strong match
Consider the trade-offs
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
Only the top string. The D, G and C are sold separately, so a full restring costs several times this.
Detail 02
Cut for a full-size cello. On a 3/4 or smaller instrument the speaking length will be wrong.
Detail 03
A steel-core string. It settles to pitch quickly and holds tuning better than gut-core alternatives.
Detail 04
Steel-core cello strings are priced per string. Budget accordingly if you are replacing the whole set.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
No. This is the A string alone. The D, G and C are sold as separate items.
No. This is cut for a 4/4 full-size cello. Smaller instruments need the matching size.
Steel-core strings settle faster than gut. Expect a few days of retuning before it holds pitch reliably.
You can, though tension and response will differ across the strings. Many players match the full set for balance.