Detail 01
Extra hard tension
Higher pull than normal or hard tension. More volume and less buzz, but stiffer to fret and press.
Product detailSKU #1274034478163
D'AddarioEJ44C Pro-Arte Composites Extra Hard Classical Guitar Strings
1/4
Independent shopping perspective
The Korena take
Extra hard tension nylon strings for classical guitar, with composite-material trebles. For players who push hard and want firm resistance under the right hand.
Strong match
Who this is for
- Classical players with a heavy right-hand attack
- Guitars where normal tension feels loose or buzzes
- Players wanting more projection and volume from nylon
Consider the trade-offs
When to look elsewhere
- Steel-string acoustics or electrics — nylon needs a tie-block bridge
- Beginners; extra hard tension is stiffer under the fingers
- Players who want a soft, mellow touch response
What matters in use
The specifications, translated
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 02
Composite trebles
A denser treble material than plain nylon, aimed at more output and clearer projection from the top three strings.
Detail 03
Classical guitar strings
Tie-on ends for a classical bridge. They will not work on a steel-string bridge with pins.
Detail 04
Nylon construction
Lower total tension than steel, so a classical neck without a truss rod stays safe.
Detail 05
Pro-Arte line
D'Addario's standard classical range, sold in single sets rather than multi-packs.
Final check
Know before you order
- 01Nylon stretches for days — expect repeated retuning after the first restring
- 02One set only; no tie-block tool or winder included
- 03Extra hard tension raises action slightly; a saddle check may be needed
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I put these on a steel-string acoustic?
No. These are classical strings that tie at the bridge. A steel-string guitar uses bridge pins and a truss rod set for steel tension.
02What does extra hard tension actually do?
It raises string tension above normal and hard, giving more volume and less buzz when you dig in, at the cost of a stiffer feel.
03How long do nylon strings take to settle?
Nylon keeps stretching well past the first session. Expect frequent retuning for several days before pitch holds.
04Are composite trebles different from regular nylon?
Yes. The composite material is denser than plain nylon, aimed at higher output and clearer projection on the top three strings.
