Description
Cobalt was Ernie Ball’s answer to a simple problem: normal alloys just don’t grab pickups the way they should. This alloy locks onto your magnets harder than anything that came before it, which means your amp actually hears more of what your fingers are doing. Dig in and you’ll notice the low end tightens up while the highs stay articulate instead of turning brittle — that gap between whisper-quiet and full-throttle just got wider.
Feel matters just as much as tone here. Cobalt strings have a smooth, almost silky surface that makes bends and vibrato feel effortless, so you can chase expressive phrasing without your fingers fighting the string. That slinky playability is baked right into the name.
This is a 12-pack of the Super Slinky gauge (.009-.011-.016-.024-.032-.042), a light-top setup that’s easy on the fretting hand while still giving you enough beef in the wound strings to keep chords sounding full. Buying in bulk means you’re set for a solid year of regular changes — because strings lose their sparkle way before they snap, and a fresh set can transform a guitar overnight.
- Cobalt alloy for stronger pickup response and wider dynamic range
- Smooth, silky feel that makes bending and vibrato easier
- Super Slinky gauge: .009-.011-.016-.024-.032-.042
- 12 individual sets — stock your gig bag, case, or workbench
Grab this pack and stop rationing your string changes. Your ears — and your fretting hand — will notice the difference every single time.





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