Product Overview
Product Description
Ernie Ball 2729 Power Slinky Cobalt 7-String Electric Guitar Strings are engineered for modern players who need extended range and heavy-duty tone. This 11–58 gauge set delivers powerful low-end presence for the 7th string while retaining crisp articulation on the high end—ideal for metal, progressive rock, and down-tuned styles.
Made with Ernie Ball’s proprietary cobalt alloy, these strings offer a significantly stronger magnetic connection to pickups than traditional materials. The result is higher output, expanded dynamic range, and bold harmonic response, all with a smooth, pliable feel for easy playability and fast fretting.
String Gauges:
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1st (E): .011
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2nd (B): .014
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3rd (G): .018
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4th (D): .028
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5th (A): .038
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6th (E): .048
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7th (B): .058
Highlights:
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Cobalt alloy delivers enhanced pickup response and output
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Designed for 7-string guitars with extended tonal range
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Great for drop tuning and modern metal styles
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Balanced feel for lead and rhythm versatility
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Made in the USA for precision and durability