Ernie Ball Cobalt Power Slinky Electric Strings 2720

Description

Ernie Ball’s Cobalt Power Slinky set (2720) swaps out the usual alloy for cobalt, a material chosen for how strongly it interacts with magnetic pickups. That tighter string-to-pickup relationship translates into a more responsive signal straight out of the gate, with notes that bloom rather than flatten under gain.

Players moving between rhythm and lead work will notice the wider dynamic range first — the low strings dig in with added weight while the top end stays defined instead of turning brittle. Harmonic content comes through with more nuance too, so pinch harmonics, pull-offs, and chord voicings all retain their character.

Cobalt also happens to feel different under the fingers. The alloy has a smoother, silkier texture than traditional nickel or steel windings, which makes bends and vibrato feel less effortful over long playing sessions.

This is a Power Slinky gauge set, sitting on the heavier end of Ernie Ball’s Slinky lineup:

• .011 (plain)
• .014 (plain)
• .018p (plain, wound-equivalent tension)
• .028 (wound)
• .038 (wound)
• .048 (wound)

Sold as a single six-string pack, ready to restring one electric guitar.