Ernie Ball Super Slinky Cobalt Electric Guitar Strings - 9-42 Gauge

4.7 4.7 out of 5 stars | 8,834 ratings

Price: 7.99

Last update: 09-10-2024


About this item

Cobalt produces a stronger magnetic relationship between pickups and strings than any other alloy previously available
Cobalt electric guitar strings provide an extended dynamic range, incredible harmonic response, strong low end, and crisp, clear highs
Wound strings consist of Ernie Ball’s Cobalt alloy wrapped around a tin-plated high-carbon steel core wire
One of the original Slinky gauges, Super Slinky has remained one of the most popular electric guitar strings for decades
Made in California, USA with the finest and freshest materials

Product information


Top reviews from the United States

Matt Moskowitz
5.0 out of 5 stars Best, Most Responsive, Strings for my PRS Semi-hollow
Reviewed in the United States on June 20, 2024
These strings REALLY rock out!!! You get some great growl out of them, they are flexible and they just sound like they sparkle! The heavier gauge is what I was looking for and the Cobalt give them a lot of bite! They sound warm with a lot of high end and deep bass. Very easily broken in. Great strings in my opinion for the money, I’d buy them even if they were double the price.
Customer image
Matt Moskowitz
5.0 out of 5 stars Best, Most Responsive, Strings for my PRS Semi-hollow
Reviewed in the United States on June 20, 2024
These strings REALLY rock out!!! You get some great growl out of them, they are flexible and they just sound like they sparkle! The heavier gauge is what I was looking for and the Cobalt give them a lot of bite! They sound warm with a lot of high end and deep bass. Very easily broken in. Great strings in my opinion for the money, I’d buy them even if they were double the price.
Images in this review
Customer image Customer image
sha4rkbyt31
5.0 out of 5 stars They do exactly what they're advertised for!
Reviewed in the United States on July 27, 2024
I bought these for my Schecter SVSS Green Reign which uses the Sustaniac pickup in the neck. These reacted a lot better than your standard nickel coated strings and sound warmer as well with very good mid-range!!! They're a bit easier to keep clean initially also and wipe down easier. The Cobalt coating also feels better on my fingers. I've tried other Teflon coated strings and don't like them as it actually does deaden the sound. Sure they last longer because they're easier to keep clean but I've had too many sets that leave ePTFE dust in your pickup cavity pockets AND the most popular brand? Your getting GHS Boomers at an inflated price with Teflon coating. $6.95 string set with Teflon is now $15.95 each if purchased in bulk. I worked for the company that produces these for 17 years. You're being scammed!
Azothyran
5.0 out of 5 stars Amazing strings, worth the hype!
Reviewed in the United States on March 17, 2012
I installed these strings onto my ESP guitar as soon as I got them in the mail, and I must say it was worth the wait. The first thing I noticed was the feel. These strings are silky smooth, even the low E string. The second thing I noticed was the durability. As I pulled the string across the fretboard I noticed the reaction these strings have to the magnetic pickups...just like Ernie Ball claims, these strings react STRONGLY to magnets. I had to peel these strings off the pickups a few times while I was installing them. Then I noticed the durability of these strings as I tuned them. I felt a fair bit of resistance, much more than my old strings when I first installed them. They're also a lot more sensitive to tuning adjustments, although after leaving them sit for two hours after JUST BEING INSTALLED, they were only 5 cents off on the tuning. A small twitch of the tuning peg and they were back to where they should be. I figured, like any string, I would be fighting with them for the next few days trying to stretch them enough so they'll stay in tune without constant adjustment, but this is my third day of playing with them and they have stayed in perfect tuning since I installed them. I can't guarantee they will work for you the same way, but I know they will hold up to a lot more abuse than many other strings I've used so far. The final thing I noticed was the TONE. These strings sound quite a bit different, they have a much tighter mid to high and they seem to have less of a tendency to chaotically overlap each other's sound. Each string has a distinctive tonality that sets them apart from each other. You play the same note on different strings and you can easily hear the difference between the two. Sustains seem to last forever, and the clarity is incredible...only problem I'm having is trying to explain how it sounds in words...if you decide to buy them, try them with distortion and without, you'll be impressed by their versatility.

To summarize,

-Strong reaction to the magnets in pickups
-Stay in tune very well (for me at least)
-Sharp, clear tone
-Each string is distinguishable from another
-Durable
-Silky smooth

If you have any questions, shoot a comment if you want, but I am telling you, I would not hesitate to try these strings at least once.
Mr. J
5.0 out of 5 stars EB Slinky Cobalt Mammoth(62-12)
Reviewed in the United States on June 4, 2024
These strings are nice!! They sound so heavy in C standard. The bass resonates really well in the 4th,5th,6th strings. The wound 3rd string is nice too. Awesome sound, and the thicker strings are amazing for that heavy sound when tuned lower than D standard. Definitely will be getting another set, and another set of 52-11 for when I want to play in standard. But really great strings so far, really good sound and quality, and definitely worth a try if you like playing in lower tuning
Amazon Customer
4.0 out of 5 stars Very bright but don't last very long.
Reviewed in the United States on August 26, 2024
I love the bright jangly tone these strings produce, even on my Epiphone Les Paul humbuckers they really sound awesome! They feel light and are easy on the fingers. I haven't had any issues keeping them in tune either.

They do get dull rather quickly compared to the standard Ernie Ball strings. I can get a little more than a month out of them before they start to sound muddy with around 1 hour of daily practice. If I had another guitar I would totally keep it set up with these strings, but they just don't sound good for long enough to use exclusively. Definitely worth a shot if you're looking for a brighter tone.
Amber Tipton
5.0 out of 5 stars Great quality
Reviewed in the United States on June 30, 2024
I bought these for my daughter’s electric guitar and they have been a great value for the money. These strings have provided a great quality of sound.
Nathan
5.0 out of 5 stars My new favorite strings!!!!
Reviewed in the United States on February 25, 2024
Strong, loud and punchy is how I can best describe these strings. Use them on my PRS and my tele. A plus is that I’ve yet to break one! These are worth a try if you’re looking for something new.
john soldano
5.0 out of 5 stars Slinky are my favorite electric guitars strings.
Reviewed in the United States on August 2, 2024
They last long, stay in tune. Great tone.

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