Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune combines stylish vintage design with precise tuning and ultra-smooth operation. Designed as an open-gear tuner with an exposed worm gear mechanism, it delivers classic aesthetics without sacrificing modern engineering performance.
A precise 1:18 gear ratio ensures accurate tuning stability and long-lasting durability. Crafted without polymer coatings on contact surfaces, it provides optimal stick-slip properties and natural instrument resonance, maintaining peak acoustic fidelity and smooth interaction over time.
Engineered to standard instrument dimensions for straightforward installation and replacement, the tuning machine features permanently locked, sealed screw joints and countersunk mounting holes for reliable hold and resonant acoustic transfer.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Weight
0.11 lb
Included Hardware
2 mounting screws (M2.2 x 11), 1 hexagonal press-in bushing (for solid headstock versions)
Bushing Outer Diameter
0.35 in
Bushing Inner Diameter
0.24 in
Button Dimensions (Butterbean)
0.80 x 0.54 x 0.41 in
Button Dimensions (Standard)
0.69 x 0.54 x 0.24 in