Detail 01
Medium gauge
Higher tension than light sets. More volume and bass, but stiffer to bend and harder on the fretting hand.
Product detailSKU #1274115037607
ThomastikAC113 Plectrum Bronze Medium Acoustic Guitar Strings
Independent shopping perspective
The Korena take
Medium-gauge bronze acoustic guitar strings from Thomastik, priced above mass-market sets. For flatpickers who want volume and a full low end.
Strong match
Who this is for
- Flatpicking and strumming where you need projection
- Dreadnoughts and larger bodies that handle medium tension
- Players wanting a bright, clear top end from bronze
Consider the trade-offs
When to look elsewhere
- Fingerstyle players who prefer lighter tension under the fingers
- Small-bodied or vintage guitars not braced for medium gauge
- Anyone restringing often on a tight budget
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
Bronze wrap
Bright, crisp attack with a scooped-sounding midrange. Dulls faster than coated strings as it oxidizes.
Detail 03
Plectrum designation
Built with pick attack in mind — the set favors projection and note separation over fingerstyle warmth.
Detail 04
Acoustic-specific construction
Bronze is non-magnetic, so an under-saddle or mic pickup will read these fine but a magnetic soundhole pickup will not.
Detail 05
Single set, six strings
One guitar's worth. Working players who change strings weekly will go through these quickly at this price.
Final check
Know before you order
- 01Medium tension can raise action and add relief — a truss rod check may be needed
- 02Confirm your guitar is rated for mediums; some builders specify lights only
- 03No picks, winder, or clippers included
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will medium strings damage my acoustic?
On a modern dreadnought or jumbo, no. On small-bodied, parlor, or older instruments built for light gauge, the added tension can pull the top and bridge over time. Check with the builder.
02Do these work with a magnetic soundhole pickup?
No. Bronze is non-magnetic, so a magnetic pickup won't hear them. Use them with an under-saddle piezo, an internal mic, or an external mic.
03How are these different from a cheap set of bronze strings?
Thomastik builds to tighter tolerances, so intonation and string-to-string balance tend to be more consistent. Tone is still bronze — bright and open.
04Will I need to adjust my guitar after switching to these?
If you're coming from light gauge, likely yes. The higher tension pulls more relief into the neck and raises action. A truss rod tweak usually sorts it.
