Detail 01
Skinny top, heavy bottom
Light high strings, heavy low strings in one set. Bends stay easy while low-string riffs stay tight and defined.
Product detailSKU #1321473138336
Ernie Ball2715 Cobalt Skinny Top Heavy Bottom Electric Guitar Strings
Independent shopping perspective
The Korena take
Cobalt electric guitar strings with light top strings and heavy bottom strings. For players who bend leads but want a tight low end.
Strong match
Who this is for
- Rhythm players who palm-mute low strings but still bend leads
- Drop D and drop C# where the low string needs tension
- Heavier styles that need a tight bottom without stiff bends
Consider the trade-offs
When to look elsewhere
- Players who want even tension and feel across all six strings
- Standard-tuning players happy with a straight 10s set
- Anyone wanting warm, rolled-off vintage tone
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
More magnetically responsive than nickel, so pickups read them hotter with more upper-midrange bite.
Detail 03
Hybrid gauge set
Tension is uneven by design. If you strum full chords hard, the low strings feel noticeably stiffer than the high ones.
Detail 04
Electric guitar strings
Steel core with magnetic winding. Not for acoustic or nylon-string instruments.
Final check
Know before you order
- 01Heavier low strings may not seat in nut slots cut for a standard set
- 02Intonate the wound strings separately — hybrid sets shift saddle positions unevenly
- 03Coming from a matched 10s set, expect a truss rod check after settling
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01What is the difference between this and a regular set?
The three high strings are light like a 9s set, the three low strings are heavy like an 11s set. You get easy bends up top and a tight low end.
02Do I need to change my setup for these?
Check nut slots for the heavier low strings and reset intonation. The uneven tension shifts saddle positions differently than a matched set.
03Are these good for drop tuning?
Yes. The heavy bottom strings hold tension in drop D and lower, which is the main reason players choose this gauge layout.
04What does cobalt do for tone?
Cobalt is more magnetic than nickel, so the pickups get a hotter signal. Expect more output, more upper-mid bite, and a brighter attack.
