Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune combines classic vintage styling with modern precision engineering, featuring an open-gear configuration and worm screw design. Built with an 18:1 gear ratio, it provides velvety smooth turning and exact tuning stability for discerning players.
Crafted without synthetic polymer coatings, the ultra-precise contact surfaces deliver wear-free stick-slip performance while ensuring natural instrument resonance. Permanently locked, sealed screw joints ensure completely maintenance-free operation over extended use.
Designed to fit standard production instrument dimensions, this tuning machine enables straightforward installation and replacement. Countersunk mounting screw holes provide a secure hold and optimal acoustic sound transmission.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Weight per Unit
0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean)
Button Dimensions
0.8 x 0.54 x 0.41 in. (Butterbean), 0.69 x 0.54 x 0.24 in. (All other buttons)
Included Hardware
2 x Countersunk Mounting Screws (M2.2 x 11), 1 x Press-In Bushing (Solid Headstock)