Schaller GrandTune Guitar Tuning Machine

The Schaller GrandTune combines refined vintage aesthetics with precise tuning performance and velvety smooth action. Engineered as an open-gear tuner with an advanced worm gear design, it delivers premium tuning stability without synthetic coatings for uninhibited acoustic resonance.
Equipped with a precise 1:18 gear ratio, this tuning machine provides exceptional tuning accuracy and lasting durability. The ultra-precise contact surfaces eliminate polymer wear while ensuring permanently sealed, maintenance-free screw joints.
Designed with standard instrument dimensions, it integrates seamlessly onto series instruments. Countersunk screw holes ensure secure mounting and direct resonance transfer across acoustic, electric, and classical headstocks.
Brand
Schaller
Model
GrandTune Einzelmechanik (GT-Single)
Gear Ratio
1:18
Weight per Unit
0.63 - 0.88 oz
Product Weight
0.11 lb
Button Dimensions
0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (Other Buttons)
Mounting Hardware
2 Countersunk Screws (M2.2 x 11), 1 Press-in Bushing (8.8 mm OD / 6.1 mm ID for solid headstocks)
Design
Open Gear