Schaller GrandTune Guitar Tuning Machine

The Schaller GrandTune combines refined vintage styling with precise tuning response and smooth operation. Designed as an open-gear tuning machine with exposed worm gearing, it delivers dependable stability across acoustic, classical, and electric instruments.
Featuring an 18:1 gear ratio, this tuner provides precise control and long-term durability. The design eliminates synthetic polymer coatings on contact surfaces to optimize mechanical resonance and prevent material degradation over time.
Engineered to standard instrument dimensions for straightforward installation and retrofitting, it includes permanently sealed and locked screw joints for maintenance-free performance, alongside countersunk screw holes for secure mounting and enhanced sound transmission.
Brand
Schaller
Model
GrandTune (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Weight
0.11 lb
Button Dimensions (Butterbean)
0.80 x 0.54 x 0.41 in
Button Dimensions (Standard)
0.69 x 0.54 x 0.24 in
Mounting Screws Included
2 x Countersunk Screws (M2.2 x 11)
Hexagonal Bushing Outer Diameter
0.35 in
Hexagonal Bushing Inner Diameter
0.24 in