Auto-Trim Locking Tuning Machines

Say goodbye to string clippers and tedious windings. D’Addario Auto-Trim Locking Tuning Machines are designed for speed, precision and tuning stability, automatically cutting off excess string as you tune. Developed by Ned Steinberger, these tuners feature a 18:1 gear ratio for smooth, exact tuning and minimal string slippage, even during intense performances.

Fast & Easy String Changes

Changing strings has never been simpler. Auto-Trim Locking Tuning Machines eliminate the need for excess wraps around the post, keeping your guitar looking clean and your tuning rock solid. First, Insert the string through the studded side of the tuner. Then, pull the string taut and tighten the locking knob. Finally, tune to pitch—the tuner automatically trims the excess string for you.

Precision Tuning & Stability 

With an 18:1 gear ratio, these tuners provide quick, smooth adjustments, ensuring exact tuning, preventing backlash or slippage. Plus, you’ll get more tuning stability than standard tuners can provide – even with the hardest, heaviest playing.  

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