Detail 01
Flatwound
Polished ribbon wrap instead of round wire. Smooth under the fingers, darker tone, almost no squeak when shifting.
Product detailSKU #1274115036765
ThomastikJF344 Flatwound Long Scale 4-String Jazz Bass Strings
Sale
Independent shopping perspective
The Korena take
Flatwound long-scale bass set for players who want a smooth, thumpy tone with no finger squeak. A premium string at a premium price.
Strong match
Who this is for
- Motown, reggae and soul players chasing dark, muted thump
- Fretless bass, where flats spare the fingerboard from wear
- Recording work where fret and finger noise cuts through
Consider the trade-offs
When to look elsewhere
- Slap and modern rock players wanting bright, aggressive attack
- Short-scale or medium-scale basses without measuring string length first
- Players replacing strings often — this set costs several roundwound sets
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
Long scale
Sized for a standard 34-inch bass. On shorter necks the taper can land wrong at the nut or tuner post.
Detail 03
4-string set
E-A-D-G only. Nothing here for 5-string basses; a low B has to be bought separately.
Detail 04
$99.99 per set
Roughly three to four times a roundwound set, but flats hold tone for years rather than weeks.
Final check
Know before you order
- 01Check your bass is 34-inch scale before ordering; string length is not adjustable
- 02Flats often need a truss rod and intonation tweak — tension differs from roundwounds
- 03Expect a break-in period; the tone settles darker over the first weeks
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Will these fit a 5-string bass?
No. This is a 4-string set covering E-A-D-G. A 5-string bass needs a dedicated set that includes a low B.
02Do flatwounds work on a fretted bass?
Yes. Flats work on fretted and fretless alike. On fretless they are the usual choice because they don't chew up the fingerboard.
03How long do flatwounds last?
Far longer than roundwounds. Flats hold their tone for years rather than months, which is part of what offsets the higher price.
04Why do these cost so much more than regular bass strings?
Flatwound construction takes more work than roundwound, and the set is built to last years. Cost per year of use lands closer to roundwounds than the sticker suggests.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsPickups & controls
- Pickup Configuration
- JJ
