Detail 01
Medium gauge
More tension than a light set. Louder and stiffer under the pick, harder to bend, more pull on the neck.
Product detailSKU #1274115036828
ThomastikSB113 Spectrum Bronze Medium Acoustic Guitar Strings
Independent shopping perspective
The Korena take
Medium-gauge bronze acoustic set from an Austrian string maker. For players who want a full-tension acoustic string and are willing to pay above commodity prices.
Strong match
Who this is for
- Dreadnoughts and jumbos where medium gauge suits the top
- Flatpicking and strumming that needs volume and pick resistance
- Players who already know they prefer medium over light
Consider the trade-offs
When to look elsewhere
- Small-body, parlor or vintage guitars built for light gauge
- Anyone chasing the cheapest restring — this runs well above bulk sets
- Classical, nylon-string or electric 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
Bronze wrap
Bright and forward when new, and it fades faster than phosphor bronze as the wrap oxidizes.
Detail 03
Acoustic-specific construction
Bronze is non-magnetic, so a magnetic soundhole pickup will barely hear these. Piezo and mic systems are unaffected.
Detail 04
One full set per pack
Six strings, one restring. Budget per-restring, not per-string, when comparing against cheaper multipacks.
Final check
Know before you order
- 01Confirm your guitar is built for medium gauge; many small bodies are not
- 02Moving from light to medium usually means a truss rod and action adjustment
- 03No picks, winder, or cutters included — just the strings
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will these fit my dreadnought?
Yes. Medium gauge is a standard fit for dreadnought and jumbo bodies. Steel-string acoustics with standard 6-in-line or 3+3 tuners take these without modification.
02Should I get medium or light?
Medium gives more volume and pick resistance for flatpicking and hard strumming. Light is easier on the fingers and on lightly built guitars. Choose medium only if your guitar is rated for it.
03Do these work on a 12-string?
No. This is a six-string set. A 12-string needs a dedicated set with the octave and unison pairs.
04Will a soundhole pickup pick these up?
Not well. Bronze is non-magnetic. Magnetic soundhole pickups need a set with steel or nickel content. Under-saddle piezo and internal mic systems work fine.
