3 treble and 3 bass, set of 6.

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 if the Imperial™ is an exact reproduction of the originals, including a 16 to 1 gear ratio.