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Based on price data from 2 merchants for "D'Addario Auto-Trim Locking Tuning Machines". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

Say goodbye to tangled string ends and hello to streamlined tuning with the D'Addario Auto-Trim Locking Tuning Machines. These innovative tuners do more than just hold your guitar in tune—they redefine the restringing process by automatically trimming excess string as you tune. No more fiddling with wire cutters or battling sharp, unruly ends; just a smooth, professional finish every time.

Designed with a precise 18:1 gear ratio, these tuning machines allow for exact tuning adjustments, making them perfect for players who demand precision. The integrated string clamp locks your strings in place, minimizing slippage and ensuring stability, even on guitars with vibrato systems. Built with a rugged, die-cast outer casing, these tuners are as durable as they are functional, promising reliability gig after gig.

Whether you're upgrading your old tuning machines or equipping a new build, the D'Addario Auto-Trim Locking Tuning Machines are a smart choice for any guitarist looking to enhance their instrument's performance and ease of use.

Key Features:

  • Automatic string trimming for a clean, hassle-free finish
  • Locking clamp secures strings to prevent slippage
  • Precise 18:1 gear ratio for accurate tuning
  • Suitable for 6-inline headstock configurations
  • Durable die-cast construction for long-lasting performance

FAQs

How do D'Addario Auto-Trim Locking Tuning Machines improve tuning stability?

These tuning machines feature a locking mechanism that clamps the string, reducing slippage and maintaining tuning stability even during heavy playing. The 18:1 gear ratio ensures precise tuning adjustments.

Do D'Addario Auto-Trim Locking Tuning Machines fit all guitar models?

These tuning machines are designed to fit most modern electric and acoustic guitars. However, it's important to check the specific dimensions and compatibility with your guitar's headstock before purchasing.

How do the Auto-Trim Locking Tuning Machines cut excess string?

The D'Addario Auto-Trim Locking Tuning Machines automatically trim excess string as you tune, thanks to their built-in hardened-steel wire cutter. This feature helps maintain a clean and tidy headstock.

What is the gear ratio of the D'Addario Auto-Trim Locking Tuning Machines?

These tuning machines have a precision 18:1 gear ratio, which allows for smooth and accurate tuning adjustments, enhancing overall tuning precision.

Are D'Addario Auto-Trim Locking Tuning Machines heavier than standard tuners?

While these locking tuners are built with a rugged die-cast casing, they are designed to balance durability and weight to minimize any additional load on the guitar's headstock.

D'Addario and Co.

D'Addario and Co.

D'Addario Accessories: Auto-Trim Tuning Machines

Video thumbnail for D'Addario Accessories: Auto-Trim Tuning Machines by D'Addario and Co.

D'Addario Accessories: Auto-Trim Tuning Machines

D'Addario and Co.

D'Addario and Co.

Video thumbnail for How to Use Locking Tuners on Acoustic Guitar (D'Addario Auto-Trim) by Jason Stallworth

How to Use Locking Tuners on Acoustic Guitar (D'Addario Auto-Trim)

Jason Stallworth

Jason Stallworth

Video thumbnail for Daddario Auto Trim Locking Tuner Install by Greg Talks Guitars

Daddario Auto Trim Locking Tuner Install

Greg Talks Guitars

Greg Talks Guitars

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about D'Addario Auto-Trim Locking Tuning Machines.

Setup and maintenance

  • Proper nut setup and reduced string friction are essential for optimal tuning stability with these tuners.

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  • A burr on the locking peg tip can cut strings; sanding with ultra-fine grit paper can prevent breakage.

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  • Without a retainer bar or proper adjustment, strings may not sit flat against the nut, affecting performance.

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User experience

  • A user reported breaking multiple strings, including high E, B, and G, suggesting potential issues with string tension or installation.

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  • Positive long-term experiences reported with multiple guitars using these tuners, highlighting their reliability when setup conditions are met.

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  • Some users manage to use a workaround by winding string around the post like traditional tuners to prevent slipping.

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  • A user has successfully used these tuners for years on an early Planet Waves model, indicating potential durability in older versions.

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Comparisons

  • A user experienced no string breakage with Grover locking tuners, indicating potential differences in performance with the D'Addario model.

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  • Grover locking tuners reportedly experience fewer string breaks compared to D'Addario auto-trim tuners.

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Features and functionality

  • The D'Addario tuners' auto-trim feature is patented, unique in the market.

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  • The auto-trimming feature, while innovative, is seen as a potential failure point by some users.

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Value and pricing

  • D'Addario auto-trim tuners were the cheapest 6L in black available at 90€ on Thomann, highlighting their affordability.

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Build quality

  • The locking stud is noted as weak and prone to breaking, impacting the tuner's reliability.

    Source

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Artist usage

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See how Taylor Young uses D'Addario Auto-Trim Locking Tuning Machines

Taylor Young

Guitarist, Bassist

Nails

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Verified via Instagram

Taylor Young uses D'Addario Auto-Trim Locking Tuning Machines on his signature Dunable Asteroid guitar. This is confirmed by a post from Dunable Guitars on Instagram, which highlights these tuners as a feature of the instrument. The post notes their ability to facilitate easy string changes and maintain stable tuning.

Genre Usage

Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.

Used With

Based on how musicians on Equipboard use D'Addario Auto-Trim Locking Tuning Machines, it is most commonly used with the following gear.

Dunable Taylor Young Signature Asteroid
Dunable Taylor Young Signature Asteroid Solid Body Electric Guitars
1
Kahler Tremolo System
Kahler Tremolo System Guitar Bridges and Tailpieces
1

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