Auto-Trim Locking Tuning Machines

FAQs

• What are locking tuners?

  Locking tuners are tuning machines with a built-in locking mechanism that holds each string securely at the tuner post, improving pitch stability. That means you no longer need to wrap the string around the post multiple times! Locking tuners are especially helpful for players who change strings often or use tremolo bridges.

• How to use locking tuners?

  Using locking tuners is simple. Simply thread the string through the tuner post, tighten the locking knob/mechanism to secure the string, and then tune to pitch. The mechanism locks the string in place so it doesn’t slip, making tuning more stable.

• How to string locking tuners?

  1. Thread the string through the tuner post hole.

  2. Pull the string tight until it’s fully seated at the nut and bridge, with no slack between the tuning post and bridge.

  3. Tighten the mechanism to secure the string.

  4. Tune to pitch as you normally would. With locking tuners, you’ll need fewer wraps around the post because the clamp holds the string securely.

• Are locking tuners easy to install?

  Yep! Locking tuners typically install just like traditional tuning machines, but compatibility varies by headstock style. Consult with a luthier if your guitar needs modification to retro fit locking tuners.

• What makes D’Addario Auto-Trim Tuning Machines the best choice for my guitar?

  D’Addario’s Auto-Trim Tuning Machines use precision locking tuner technology and a patented automatic trimming feature that cuts off excess string as you tune, removing the need for separate string cutters and keeping your headstock clean and snag-free. They also feature a precise, 18:1 gear ratio for smooth tuning and reliable tuning stability, while individual locking mechanisms keep the string in place at the post, eliminating the need for extra wraps that may cause unwanted slippage. That all means faster string changes, better tuning performance, and a pro-grade finish every time. We also offer Gold, Black, and Chrome options to match your guitar’s hardware, as well as 6 in line or 3-3 headstock configurations. We even offer single units to accommodate extended rage guitars.