Detail 01
Power Slinky gauge
Heaviest in the Slinky bass line. Higher tension means more resistance, stronger fundamental, and less flop when tuned down.
Product detailSKU #1321473138287
Ernie Ball2731 Cobalt Power Slinky Electric Bass Strings
1/2
Independent shopping perspective
The Korena take
Cobalt-alloy bass strings in Power Slinky gauge — the heavy end of the Slinky range. For players who want high tension and strong low end.
Strong match
Who this is for
- Pick-style rock and metal where you dig in hard
- Drop tunings that go slack on lighter gauges
- Players who want a firmer, more resistant feel
Consider the trade-offs
When to look elsewhere
- Light-touch fingerstyle players — this will feel stiff
- 5-string basses; this is a 4-string set
- Anyone wanting easy bends and fast, low-tension action
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
Cobalt alloy wrap
Reads hotter off the pickups than nickel, with more upper midrange bite and a more aggressive attack.
Detail 03
Roundwound construction
Growl and grind with audible finger and pick noise. Harder on frets than flatwounds.
Detail 04
4-string set
E-A-D-G only. No low B string, so 5-string basses need a different set.
Detail 05
Higher tension
Pulls harder on the neck than a light set, so relief and intonation shift when you switch to these.
Final check
Know before you order
- 01Heavier gauge pulls the neck more — plan on a truss rod and intonation setup
- 02Nut slots may need filing if the strings bind or sit high
- 03One set. No winder, cutters or cleaner included
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What gauges are in Power Slinky bass?
It's the heaviest set in Ernie Ball's Slinky bass range, sitting above Super Slinky and Regular Slinky in both thickness and tension.
02Are these good for drop tuning?
Yes. Heavier gauge holds tension better when you tune below standard, so the low string stays defined instead of going floppy.
03Will heavier strings damage my bass?
No, but they increase neck pull. Check relief after installing and adjust the truss rod if the action rises or the neck bows.
04Cobalt versus nickel bass strings?
Cobalt is more magnetically responsive, so output is hotter with more upper midrange. Nickel is smoother and warmer. Same feel, different voice.
