This set of Heavy Core Strings was developed with great input from Head and Munky for increased dynamic range, optimal tension when drop-tuned, and incredible tuning stability when playing hard on 7-string guitars.

Jim Dunlop Heavy Core electric strings are manufactured at their factory HQ in Benicia, California. With 50 years of experience and a developed understanding of a guitar players’ needs, Dunlop has a produced a string that sings with tone and plays with perfect tension and flexibility. As a guitarist, you want a string that feels comfortable to play but delivers power and nuance, Jim Dunlop Performance+ strings are your new string. Trust me. Heavy Core strings designed specifically for drop tunings, so you can maintain a good playing tension even when tuning to doom territory!

So, there are a few of us (loads of us) who love to ‘dig in’ when we play - all hail the riffers! With proprietary core-to-wrap ratios, these strings literally have a heavier/thicker core which offers that little extra strength and resistance to give us confidence when we really want to attack a riff or more energetic part of a song.

As with all Jim Dunlop strings they feel soft and springy with brightness and clarity. Furthermore, the added bonus of a heavier core is, of course, heavier tone!

Jim Dunlop says:
"Korn’s Head and Munky helped kick off the nu-metal movement with 7-string guitars and aggressive down-tuned grooves. Searching for a way to evolve that sound and fully unlock the true potential of their instruments, they came to Dunlop. We worked closely with both players to build a set of strings around Heavy Core technology for increased dynamic range, optimal tension when drop-tuned, and incredible tuning stability. This is that set of strings—carefully tailored to the tonal and tactile dynamics of 7-string guitars. It’s the sound and feel that Head and Munky depend on whether they’re cutting tracks in the studio or throwing it down on stage."