The K3 Coating is the first coating that players report, Â "sounds as good or better than uncoated strings." Â DR's new, remarkable, proprietary and patented #8487168 K3 Technology Coating is the first coating that makes no apologies and no excuses for not delivering sound equal to uncoated strings. Â Players tell us that these strings have more volume, less unwanted overtones, greater clarity and articulation then standard, uncoated strings. Â Yet, they provide the same protection due to corrosion and perspiration as well as increased tone life that coated strings are known for. |