Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune combines classic vintage open-gear aesthetics with modern engineering, delivering precise tuning stability and exceptionally smooth performance. Featuring a classic open gear and worm architecture, it provides an uncompromising design suited for discerning musicians and luthiers.
Equipped with a precise 1:18 gear ratio, this tuning machine enables exact fine-tuning and long-lasting durability. The zero-synthetic coating architecture optimizes instrument resonance, allowing the tuner and headstock to interact cleanly without unwanted damping or premature wear.
Designed with standard instrument dimensions for straightforward installation and replacement, each tuner incorporates countersunk screw holes and permanently sealed joints for wear-free, maintenance-free reliability over years of playing.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Gear Ratio
1:18
Product Weight
0.11 lb
Weight per Single Tuner
0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean) including bushing
Button Dimensions (WxHxD)
0.8 x 0.5 x 0.4 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons)
Press-In Bushing Outer Diameter
0.35 in
Press-In Bushing Inner Diameter
0.24 in
Post Compatibility
0.24 in post diameter
Design
Open Gear