EverTune

Cosmos Lyles, an amateur musician working as a restaurateur, kept getting frustrated by guitars drifting out of tune mid-session from string bending and everyday wear, and started developing a fix in the mid-2000s with engineer Paul Dowd. The bridge they built, launched under EverTune in Los Angeles in 2008 and shown publicly at CES in 2010, uses a mechanical system that holds each string at constant tension regardless of how hard it's played, keeping the guitar in tune without the usual trade-offs of a locking trem. It's since been adopted as a factory option by Charvel, Cort, Jackson and Schecter, mostly on guitars aimed at high-gain, drop-tuned metal playing. We cover it through the guitars that ship with it built in. Here's what we've written.