Detail 01
Medium gauge
Noticeably higher tension than light. More volume and low end, but harder on the fingers and the guitar's top.
Product detailSKU #1292606661995
D'AddarioEJ17-10P Phosphor Bronze Medium Acoustic Strings 10-Pack
1/7
Independent shopping perspective
The Korena take
Ten sets of phosphor bronze acoustic strings in medium gauge, for acoustic players who go through strings and want higher tension and volume.
Strong match
Who this is for
- Flatpicking and strumming that needs volume and headroom
- Dreadnoughts and larger bodies built for higher tension
- Players restringing monthly who want to stock up
Consider the trade-offs
When to look elsewhere
- Small-body or vintage guitars not braced for medium tension
- Fingerstyle players wanting a light touch
- Electric guitars — bronze windings barely register on pickups
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
Phosphor bronze
Warmer and less bright than 80/20 bronze, and holds its tone longer before going dull.
Detail 03
10-pack
About $7.50 a set. Only worth it if you are certain medium gauge suits your guitar.
Detail 04
Acoustic guitar strings
Bronze-wound over steel. Built to drive a soundboard, not to be read by magnetic pickups.
Detail 05
EJ17
Fixed gauge code, so every set in the box pulls identical tension and your setup stays put.
Final check
Know before you order
- 01Check your guitar is rated for medium gauge — some builders void warranty over light
- 02Moving up from light gauge means truss rod and likely saddle and nut work
- 03Sealed envelopes only; opened bronze strings oxidize on the shelf
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will medium gauge damage my acoustic?
On a guitar built for lights, sustained medium tension can pull the top and shift the neck. Check the manufacturer's recommendation before switching.
02Phosphor bronze or 80/20?
Phosphor bronze is warmer with more midrange and stays fresh longer. 80/20 is brighter out of the envelope but fades faster.
03Do these work with an undersaddle pickup?
Yes. Undersaddle and internal mic systems read string vibration, not magnetism, so bronze strings are correct for them.
04How should I store nine unused sets?
Leave the foil envelopes sealed and keep them somewhere cool and dry. Sealed sets stay usable for years; opened ones tarnish within weeks.
