Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single delivers a perfected blend of classic open-gear vintage aesthetics and ultra-precise tuning performance. Engineered with an open gear and worm architecture, it offers smooth, reliable operation designed to complement high-end acoustic, classical, and electric instruments.
Featuring an accurate 1:18 gear ratio, this tuning machine provides dependable tuning stability and longevity. The construction avoids synthetic polymer coatings, utilizing ultra-precise contact surfaces to create optimal stick-slip behavior and resonant acoustic transfer across the headstock.
Equipped with permanently locked and sealed screw joints, the mechanism ensures maintenance-free and wear-free performance over time. Standardized dimensions allow for straightforward installation and replacement 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
0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (Butterbean) including bushing
Product Weight
0.1 lb
Button Dimensions (WxHxD)
0.80 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)
Mounting Hardware Included
2 mounting screws (M2.2 x 11), 1 hexagonal press-in bushing (for solid headstock)