Item #: GRA PRN2411C0 LIST

Graph Tech Ratio Tuned Acoustic Guitar Machine Heads 3x3

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Product Description

Graph Tech Ratio Tuned Machine Heads is a set of three a side acoustic guitar tuners. They have a contemporary shaped button and two pin casing. Ratio Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. Graph Tech balanced the individual gear ratios to each string dramatically simplifying the tuning process.

No more overshooting the G string or twisting away on the high E string. With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string. Now includes InvisoMatch Standard Mounting Plates for easy installation. Fits most headstocks.

warning WARNING: Cancer and Reproductive Harm -
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Phone:  800-388-7011 Warranty: 

Customer Reviews

Review: Joseph Submitted: 10/16/2019

Product Rating5 out of 5 stars.


Product Rating

Product Review

The tuners feel like quality and work great. The different ratio gearing does makes it a little easier mainly on the G and high E strings. And I’ve had no issues with tuning stability.

Review: Chris Submitted: 8/6/2019

Product Rating5 out of 5 stars.


Great upgrade tuner

Product Review

These tuners are awesome, great upgrade super easy install with the included plates.

Review: Sheila Submitted: 8/11/2018

Product Rating5 out of 5 stars.



Like having a new guitar.

Product Review

These are really heavy duty machine heads.


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