Detail 01
Roundwound
Textured outer wrap gives brighter attack and more sustain than flats, plus audible finger squeak and faster fret wear.
Product detailSKU #1274115036246
ThomastikJR346 Roundwound Scale 6-String Jazz Bass Strings
Independent shopping perspective
The Korena take
Roundwound six-string bass set from Thomastik. For extended-range players who want bright, aggressive top end rather than the flatwound thump the brand is better known for.
Strong match
Who this is for
- Six-string bass players wanting bite and finger noise
- Slap and modern fingerstyle where highs matter
- Replacing a dull set on a wide-neck six
Consider the trade-offs
When to look elsewhere
- Four- and five-string basses — this is a six-string set
- Players chasing smooth flatwound thump
- Fretless boards, where roundwounds wear the fingerboard
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
Six-string set
Includes the low B and high C. Won't work on a four or five without leftover or missing strings.
Detail 03
Low B string
The longest, thickest string in the set. Needs a well-cut nut slot and enough scale length to stay tight rather than floppy.
Detail 04
High C string
Thin and easy to over-tension. Tune carefully; it breaks more readily than the rest of the set.
Detail 05
Set price
This sits well above typical bass sets. Cost per string climbs with six strings and Thomastik's manufacturing.
Final check
Know before you order
- 01Check your bridge and nut are cut for six strings before ordering
- 02Roundwounds change setup — expect to reset relief and intonation
- 03Gauges may differ from your current set, so tension and truss rod feel will shift
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will these fit a five-string bass?
Not as intended. You would leave one string unused, and the remaining gauges may not match your instrument's spacing or tuning.
02How are these different from Thomastik flatwounds?
Roundwounds have a ridged outer wrap. Brighter, more sustain, more finger noise. Flats are smooth, darker and thumpier.
03Can I use these on a fretless?
You can, but roundwound texture gouges an unwound fingerboard over time. Flatwounds or a coated board are safer for fretless.
04Do I need a setup after changing to these?
Plan on one. Different gauges shift neck relief and intonation, and roundwounds sit differently in nut slots than flats.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsPickups & controls
- Pickup Configuration
- JJ
