Schaller GrandTune Guitar Tuning Machine

The Schaller GrandTune combines refined vintage styling with precise tuning accuracy and ultra-smooth operation. Crafted as an open-gear tuner with a precision worm drive, it delivers consistent tuning stability for premium instruments.
Featuring an 1:18 gear ratio, this tuning machine provides precise adjustments and extended durability. The design avoids synthetic polymer coatings to ensure natural instrument resonance and seamless acoustic coupling.
Built with permanently locked and sealed screw connections, the GrandTune offers maintenance-free and wear-free performance while adhering to standard instrument dimensions for straightforward installation.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Weight
0.11 lb
Weight per Single Tuner
0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (Butterbean) including bushing
Button Dimensions (WxHxD)
0.8 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)
Mounting Screws Included
2 x Countersunk Screws (M2.2 x 11 mm / 0.43 in)
Hexagonal Bushing Outer Diameter
0.35 in
Hexagonal Bushing Inner Diameter
0.24 in