Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune combines stylish vintage design with precise tuning stability and velvety-smooth performance. This perfected classic open-gear tuning machine features an exposed gear and worm architecture engineered for superior acoustic resonance and operational precision.
With a 1:18 gear ratio, the GrandTune delivers precise and durable tuning action across varied string tensions. The complete omission of synthetic polymer coatings creates pure metallic contact surfaces that optimize instrument resonance without wearing down or aging over decades of play.
Built to standard serial instrument specifications, each machine features permanently locked, sealed screw joints for zero-maintenance operation. Countersunk mounting holes provide maximum structural stability and direct vibration transfer into the headstock.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
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
Included Bushing Outer Diameter
0.35 in
Included Bushing Inner Diameter
0.24 in