Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single combines refined vintage aesthetics with modern engineering precision. Featuring an open-gear design with a worm gear mechanism, this tuning machine delivers smooth performance and reliable tuning stability for acoustic and electric guitars.
With a precise 1:18 gear ratio, the mechanism enables accurate fine-tuning. The design avoids synthetic polymer coatings to maximize natural resonance and acoustic transfer, while ultra-precise contact surfaces ensure wear-free operation over long-term use.
Built to standard instrument dimensions for straightforward installation and replacement, each unit features permanently locked and sealed screw joints along with countersunk mounting holes for secure attachment and optimal sound transmission.
Brand
Schaller
Model
GT-Single
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Product Weight
0.1 lb
Included Screws
2 countersunk mounting screws (M2.2 x 11)
Included Bushing
1 hexagonal press-in bushing (0.35 in outer diameter, 0.24 in inner diameter for 0.24 in string post, solid headstock only)