Detail 01
Resophonic set
Gauged heavier than a standard acoustic set so the strings drive a metal cone rather than a wood top.
Product detailSKU #1274034477972
D'AddarioEFT13 Flat Top PB Resophonic Acoustic String Set
Independent shopping perspective
The Korena take
String set for resophonic guitar, with a flat top design. For resonator players, not a substitute for a standard acoustic set.
Strong match
Who this is for
- Squareneck or roundneck resonators played in open tunings
- Dobro-style slide playing where string mass drives the cone
- Replacing worn strings on a biscuit or spider-bridge resonator
Consider the trade-offs
When to look elsewhere
- Standard flat-top acoustic guitars — the gauges are built for a cone
- Players wanting light gauges for fretted, non-slide playing
- Electric or classical guitars
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
Flat top string design
The wrap is ground flatter, giving a smoother surface under a slide and less scrape noise.
Detail 03
Phosphor bronze
Warmer and slightly darker than 80/20 bronze, and it holds its tone longer before going dull.
Detail 04
Heavy tension for slide
High tension keeps the string from choking out under a bar, which is why resonator sets run stiff.
Final check
Know before you order
- 01High tension — don't fit these to a standard acoustic without checking the build
- 02Resonators often use open tunings; these gauges assume that pull
- 03Setup differs by bridge type — spider and biscuit cones seat strings differently
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I use these on a regular acoustic guitar?
They're gauged for a resonator cone, so the tension is high for a wood-top acoustic. Use a standard acoustic set unless you know your guitar handles heavy strings.
02Are these for squareneck or roundneck?
Both. Squareneck players in open tunings and roundneck slide players use resophonic sets. Gauge choice comes down to your tuning and action.
03Why do resonator strings need to be heavier?
The cone needs more energy than a wood top to move. Heavier strings drive it harder and give the volume and cut a resonator is built for.
04What does the flat top wrap do?
It smooths the surface the slide rides on, so you get less scrape noise and slightly less wear on the bar.
