Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single combines classic open-gear vintage aesthetics with advanced precision engineering. Designed with an open gear and worm drive mechanism, it delivers smooth performance and reliable tuning accuracy for acoustic, classical, and electric guitars.
Featuring a precise 1:18 gear ratio, this tuning machine provides fine adjustment capabilities without the use of synthetic polymer coatings. The ultra-precise contact surfaces ensure optimal stick-slip action and unhindered instrument resonance while resisting wear over extended use.
Built with permanently locked and sealed screw connections, the GrandTune requires zero maintenance. Standard production dimensions and countersunk mounting holes facilitate seamless installation and efficient tone transfer directly to the headstock.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Weight
0.1 lb
Button Dimensions
0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (Other Buttons)
Included Hardware
2 x M2.2 x 11 mm Mounting Screws, 1 x 8.8 mm Hex Press-In Bushing (Solid Headstock)