Schaller GrandTune Guitar Tuning Machine

The Schaller GrandTune combines refined vintage styling with precise tuning accuracy and ultra-smooth operation. Designed as an open-gear tuner with an exposed worm and gear mechanism, it provides an uncompromising blend of classic aesthetics and modern mechanical performance.
Featuring a precise 1:18 gear ratio, this tuning machine delivers exceptional tuning stability and long-lasting durability. The polymer-free design ensures resonant acoustic coupling with the instrument headstock, while permanently locked and sealed screw joints provide maintenance-free longevity.
Built to standard instrument dimensions for straightforward installation or replacement, it features countersunk screw holes for solid mounting and optimal vibration transfer. Each single tuner includes matching mounting hardware and a press-in bushing for solid headstocks.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Button Dimensions
0.8 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)
Unit Weight
0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean)
Included Bushing Outer Diameter
0.35 in (8.8 mm)
Mounting Hardware Included
Yes (2 mounting screws M2.2 x 11 mm, 1 press-in bushing)