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  • Ernie Ball Cobalt Beefy Slinky 11-54 Electric Guitar Strings
  • Ernie Ball Cobalt Beefy Slinky 11-54 Electric Guitar Strings
Ernie Ball

Ernie Ball Cobalt Beefy Slinky 11-54 Electric Guitar Strings

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Ernie Ball
Cobalt Slinky
Set gauges
11, 15, 22, 30w, 42w, 54w
Wrap material
Round Wound
Core shape
Hex Core
Plain Steel
Number of strings
6 string
Optimal tuning
Plain wound 3rd
Plain 3rd
Part number

This is a set of Ernie Ball COBALT electric guitar strings

Cobalt is known as a transition metal and is a byproduct of nickel or copper production. It innately provides a greater magnetic response than nickel resulting in higher output and bigger, bolder, more-focused upper midrange.  Ernie Ball combines cobalt with iron to create the most magnetic alloy available in a set of guitar strings.

The feel of Cobalt is quite different to nickel. It has more of a textured, matte surface which offers a particularly playable grip under fingers; something that a lot of players are searching for.

When played clean these strings sound loud and bright with a sparkling top-end and phat presence, however when thrown into the mix with a bit of drive and a set of humbuckers the tone intensely full with pronounced midrange and raw-sound, edgy top. In fact, I’d go as far to say that these strings were created to riff!


"Ernie Ball Cobalt Strings sound and feel better than anything I've ever played! You have to check these out!"
- Slash 

"Cobalt Strings feel incredibly silky under my fingers and deliver more punch, output, and clarity than normal strings!"
- John Petrucci

"There's a certain degree of clarity and punch you get from Cobalt Strings that I haven't heard tonally from any other strings I've played."
- Joe Bonamassa


What Ernie Ball says:
Ernie Ball Cobalt Slinky Guitar Strings are round-wound for maximum clarity and serious punch. The Cobalt Slinky set is an improvement on its classic nickel-wound counterpart giving the player increased sustain, clarity and output. In addition, they resist sweat and moisture better and have unmatched flexibility when compared to other nickel wound strings. 

• Proprietary Alloy developed by EB specifically for Guitar Strings
• Engineered to Maximize Output and Clarity
• Slinkier Feel, Beefier Tone
• Longer Lasting due to a Stronger Wrap Wire
• World's First and Only Cobalt String
• Alloy of Iron and Cobalt – Most Magnetic Alloy Available!
• Patent Pending
• Wound Strings Only

SKU: 2727

Re: Delivery. All orders placed on weekdays before 3:45pm will be despatched that same day.  All of our delivery options can be found at checkout or on our delivery page.

Re: Returns. We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.

To start a return, please contact us at info@stringsdirect.co.uk.

For further information visit our Returns & refunds page.

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