Schaller GrandTune Guitar Tuning Machine

The Schaller GrandTune combines classic vintage open-gear aesthetics with precise tuning response and smooth performance. Engineered with an 18:1 gear ratio, it delivers high tuning precision and exceptional longevity without synthetic polymer coatings, allowing for natural acoustic resonance.
Built with ultra-precise contact surfaces and permanently locked, sealed screw joints, this machine head offers wear-free and maintenance-free operation. Its standard dimensions ensure seamless installation or replacement on standard production guitar headstocks.
Equipped with countersunk screw holes for secure mounting and optimal acoustic transfer, the GrandTune provides rock-solid tuning stability and tonal integrity for premium instruments.
Brand
Schaller
Model
GT-Single
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Mounting Hardware
2 countersunk mounting screws (M2.2 x 11), 1 hexagonal press-in bushing (8.8 mm OD / 6.1 mm ID)
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
Button Dimensions (WxHxD)
0.8 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)