EverTune vs locking tuners: which one actually keeps you in tune?

Neither one is simply better, because they fix different faults. Locking tuners are a headstock upgrade that stops the string slipping at the tuning post. An EverTune is a whole replacement bridge that holds every string at constant tension, so it fights tuning drift from every direction at once. If your problem is a wobbly whammy bar or slow restrings, locking tuners are the cheap, reversible answer. If your problem is staying dead in tune through a long session, a cold stage, or aging strings, EverTune is the thorough one.

So read this as a match of problem to tool, not a race. Below is exactly how each works, what each does not do, and which intent each one wins.

A locking tuner replaces your standard tuning machine and adds one thing: a clamp. Per Sweetwater's breakdown, they use "a clamping mechanism to lock the string in place," which stops it slipping at the post. You feed the string through, tighten the clamp, and tune. That is the whole idea.

Two real benefits come out of that. First, restringing gets faster and cleaner, because you can "use fewer string windings to keep the tuning stable," so there is almost no wrap around the post to slip or stretch. Second, and this is the big one, they help tremolo players. Sweetwater notes they "reduce the amount of string slippage due to use of the tremolo bar," which means "reduced tuning problems resulting from tremolo use." If you dive-bomb a non-locking trem, the post is a prime suspect for your tuning going south, and a clamp there helps.

Here is the honest limit. A locking tuner only fixes slippage at the post. It does nothing for the other causes of drift: friction at the nut, temperature and humidity swings, neck movement, and strings that simply go flat as they wear. If your fixed-bridge guitar drifts and you never touch a whammy bar, locking tuners may not be your fix. A properly cut nut, fresh strings, and good stringing technique often matter more. For hardware-heavy tremolo setups, our Floyd Rose string-change guide covers the locking-nut route to the same goal.

A quality set like Graph Tech Ratio locking tuners is a genuine drop-in upgrade, fully reversible, no routing required. Just buy the layout that matches your headstock, whether that is 6-in-line or 3-plus-3.

An EverTune is not a tuner at all. It is a replacement bridge, and per its Wikipedia entry it uses "a spring and lever system that maintains string tension," with a dedicated mechanism under each of the six strings. When a string tries to go sharp or flat, "the springs apply the opposing force necessary to compensate for the shift, thus maintaining the correct tension and tuning." The result is "a constant state of tension despite changes in temperature or humidity or the exertion of pressure on the string." That last part is the key: it holds tune against causes that locking tuners cannot touch.

Because the bridge does the work, tuning moves too. A guitar with one installed "is no longer tuned by turning the pegs at the end of the guitar's neck but rather with a screw on the bridge." The device was conceived by guitarist and engineering student Cosmos Lyles with engineer Paul Dowd, reached the market in October 2010, and was featured in The New York Times' "Year in Ideas."

The nuance that scares people off is bending, and it should not. Per EverTune's own instructions, each string normally lives in what they call Zone 2, the range where "we turn the tuning pegs while plucking the string and the note stays constant." Where you sit inside Zone 2 sets the feel. Back it off to around Zone 2.5 and the string will "never bend and always play dead on in tune for rhythm tracks and commercial recording." Push it up near Zone 2.99 and the string will "bend like a conventional guitar." You can set each string separately, so many players lock the low strings for rhythm and leave the high strings bendable for leads.

The tradeoffs are real. Installing an EverTune means routing a cavity in the body, so it is a permanent modification, best left to a luthier or bought on a guitar that already has one. It costs far more than a set of tuners, and a string set deep in Zone 2 feels stiffer under a bend than a normal guitar. You are buying thoroughness, and paying for it in money, install, and a little feel.

There is real overlap worth naming. An EverTune already removes the post-slippage problem that locking tuners exist to solve, so stacking both rarely pays off. Pick the one that matches your actual complaint. And remember that neither one fixes strings that have gone dead, so whichever you choose, our guide on what actually shapes your tone and the reminder to change strings on time still apply.

If you want the most tuning stability money can buy and you are willing to modify the guitar, the EverTune is the more complete system, full stop. It fixes causes of drift that locking tuners physically cannot reach, and its rhythm-and-recording lock is a real advantage for anyone stacking guitars in a mix. The price is cost, a permanent install, and a bit of feel to get used to.

If you want most of the practical benefit for a fraction of the money and effort, and especially if you use a tremolo, locking tuners are the smart first move. They are cheap, reversible, and fix the single most common slippage point on a trem guitar. They just will not save you from a cold room, a sticky nut, or a dead set of strings. Choose by the problem you actually have, not by the one that sounds most impressive.