Detail 01
Cobalt alloy
Reads hotter to magnetic pickups than nickel. More output, more upper-mid growl, more string-to-string clarity.
Product detailSKU #1321473138322
Ernie Ball2735 Cobalt Extra Slinky Electric Bass Strings
1/2
Independent shopping perspective
The Korena take
Cobalt-alloy bass strings in a light Extra Slinky gauge. For bassists who want easy playing feel and bright, aggressive output.
Strong match
Who this is for
- Fast fingerstyle or pick playing where low tension helps
- Rock and metal tones that need cut through a mix
- Players switching from guitar who want less string tension
Consider the trade-offs
When to look elsewhere
- Slap players who want tight, snappy string response
- Drop tunings — light gauges go floppy below standard
- Players after warm, vintage thump
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
Extra Slinky gauge
The lightest of the Slinky bass sets. Easy on the fingers, faster to fret, less tension on the neck.
Detail 03
Roundwound bass strings
Textured winding gives finger noise and bright attack. Wears frets faster than flatwounds.
Detail 04
Four-string set
Fits standard four-string basses. A five-string will need a separate B string bought on its own.
Detail 05
$39.99
Bass strings cost more than guitar strings — more metal, longer lengths. Expect this range for a quality set.
Final check
Know before you order
- 01Dropping to a lighter gauge changes neck relief — plan on a truss rod tweak
- 02Intonation will need resetting at the bridge after the change
- 03Check your bass's scale length; long-scale sets do not fit short-scale instruments
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 four-string set. You would need to buy a low B string separately, and the gauges may not match well.
02Are cobalt strings worth the extra cost over nickel?
If you want more output and brightness, yes. Cobalt drives pickups harder and has more upper-mid presence. For warm vintage tone, nickel is the better pick.
03How light is Extra Slinky compared to a regular set?
It is the lightest gauge in the Slinky bass line. Noticeably easier to fret and bend than a standard set, with less tension on the neck.
04Do these work on a short-scale bass?
Check the scale length before buying. Bass sets are cut for specific scale lengths, and a long-scale set will not wind properly on a short-scale bass.
