Schaller GrandTune Guitar Tuning Machine

The Schaller GrandTune combines refined vintage styling with precise tuning response and smooth performance. Engineered as a classic open-gear tuning machine with a worm gear mechanism, it delivers exceptional operational reliability without synthetic coatings for enhanced instrument resonance.
Featuring an 1:18 gear ratio, this machine head provides pinpoint tuning accuracy and long-term durability. Its wear-free construction and ultra-precise contact surfaces offer consistent stick-slip resistance while maintaining tone transfer and tuning stability over years of play.
Built to standard production instrument dimensions, the GrandTune allows for straightforward installation or direct replacement. Countersunk mounting screw holes and permanently sealed fittings ensure secure attachment and maintenance-free operation across acoustic and electric guitars.
Brand
Schaller
Product Type
Guitar Tuning Machine
Model
GrandTune Einzelmechanik (GT-Single)
Gear Ratio
1:18
Weight
0.67 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 x Countersunk Mounting Screws (M2.2 x 11 mm), 1 x Press-in Hex Bushing (0.35 in OD, 0.24 in ID)
Configuration
Open-Gear Design