Remarkably smooth mechanism, completely enclosed and self-lubricating with a 12-to-1 gear ratio.

The original Rotomatic® with an improved higher ratio gearing. The 18:1 ratio provides for finer tuning and greater stability. The finer gears provide smoother tuning and a higher degree of backlash elimination. This new version of the Rotomatic® uses the exact housing as the...

The original Rotomaitc® with an improved higher ratio gearing. The 18:1 ratio provides for finer tuning and greater stability. The finer gears provide smoother tuning and a higher degree of backlash elimination. This new version of the Rotomatic® uses the exact housing as the...

Distinctive in styling and quality, the Imperial™ made it’s first appearance in the 1970’s. The most notable feature of this unique machine head is the futuristic Three Step button, a fresh and funky design trademarked by Grover. This re-introduction of the Imperial™ is an exact...

Totally Proffesional in design and performance. Small, lightweight, this precision machine fits guitar headpieces that will not take full size machines. The mini buttons provide more space for player’s fingers (even larger fingers) to tune strings. Gear ratio is 14:1....

Thick chrome plating will last for decades and retain their its looks while the lubricated sealed gears keep your baby in tune.

Grover's patented locking tuners have eliminated the obstacles of other locking devices. Since there are no external mechanisms to initiate the locking action, the machine head's appearance is like any other. The entire locking mechanism is self-contained and self actuated....