Graph Tech Ratio Tuned Contemporary Acoustic Machine Heads

Upgrade your acoustic guitar with these tuners for increased tuning stability. These machine heads have been designed to pair with different string gauges.

This Graph Tech Ratio Tuned Contemporary Acoustic Machine set of Tuning Heads is for the majority of acoustic guitars with a 3+3 headstock layout. It has a contemporary shaped button and has a two pin casing.

Ratio - Tuned Machine Heads

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 simplified 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.


InvisoMatch Standard Mounting Plates for easy installation. Fits most headstocks.
WARNING: Cancer and Reproductive Harm -

Dimensions and Weight in Packaging
Chrome, PRN 2411 C0
Shipping Weight: 1 lbs
Shipping Dimensions: 5 x 5 x 3 in
Manufacturer Part Number (MPN): PRN-2411-C0

For support or warranty questions, please contact the manufacturer:
Phone: 800-388-7011

Chrome, PRN 2411 C0

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