Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single offers a refined blend of vintage aesthetics, precision tuning, and smooth performance. Featuring an open-gear design with a worm gear architecture, this individual tuning machine delivers timeless styling combined with modern engineering.
With a precise 1:18 gear ratio, it provides exceptional accuracy and long-term durability. The design eliminates synthetic polymer coatings, allowing for direct resonance transfer across the instrument while maintaining frictionless, wear-free engagement.
Built with permanently locked, sealed screw joints and countersunk mounting holes, it ensures maintenance-free operation, dependable tuning stability, and straightforward installation on standard instrument headstocks.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Weight per Single Tuner
0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean)
Button Dimensions (W x H x D)
0.8 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)
Included Bushing Outer Diameter
0.35 in
Included Bushing Inner Diameter
0.24 in
Total Weight
0.11 lb