Detail 01
Medium gauge
Higher tension means more volume and low end, but harder to fret and more pull on the neck.
Product detailSKU #1274034478111
D'AddarioEFT17 Flat Top PB Medium Acoustic Guitar Strings
1/4
Independent shopping perspective
The Korena take
Phosphor bronze medium-gauge acoustic strings with a flattened outer wrap. For players who want a fuller low end without the squeak of standard roundwounds.
Strong match
Who this is for
- Flatpickers who need volume and push behind a strum
- Fingerstyle players wanting warmth without slide noise
- Dropped or open tunings that go slack on lights
Consider the trade-offs
When to look elsewhere
- Players with weaker grip or sore fingertips
- Small-bodied or vintage guitars not rated for mediums
- Anyone wanting the easiest possible bending
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 winding
The outer wrap is ground flat, so fingers glide instead of catching. Cuts squeak, especially on the wound strings.
Detail 03
Phosphor bronze
Warmer than 80/20 bronze and slower to go dull, which matters more on a set you'll leave on a while.
Detail 04
Acoustic-only wrap
Bronze won't excite electric pickups. Fine with piezo or mic systems on an acoustic-electric.
Detail 05
Single set
Six strings, one guitar. No spares in the package.
Final check
Know before you order
- 01Confirm your guitar handles medium gauge — some smaller and older bodies shouldn't
- 02Moving up from lights usually needs truss rod and intonation adjustment
- 03No winder, cutters, or bridge pins included
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Are mediums too much for my acoustic?
Depends on the guitar. Full-size dreadnoughts usually handle them fine. Parlors, small bodies, and older instruments may not — check with the maker.
02What's the difference between these and the light gauge version?
Same phosphor bronze flat top construction, thicker strings. More volume, more low end, higher tension, and harder to fret and bend.
03Do flat tops feel like flatwounds?
Smoother than standard roundwound acoustic strings, but not fully smooth like true flatwounds. The wrap is ground down, not flat ribbon.
04Will these reduce finger squeak on recordings?
Yes, that's the main reason to buy them. The ground wrap gives fingers less ridge to catch on when you shift positions.
