Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single combines vintage open-gear aesthetics with modern engineering, delivering velvet-smooth performance and tuning precision. Designed without synthetic coatings, it forms a perfectly resonant unit on acoustic, classical, electric, and archtop guitars.
Featuring an 18:1 gear ratio, this tuning machine provides precise control and long-lasting stability. Permanently locked, sealed screw joints ensure wear-free and maintenance-free operation across the lifespan of the instrument.
Crafted to standard production guitar dimensions for effortless retrofitting and installation, it incorporates countersunk mounting screw holes to deliver secure hold and optimal tonal transmission.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
18:1
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 press-in bushing
Button Dimensions (W x H x D)
0.80 x 0.54 x 0.41 in. (Butterbean), 0.69 x 0.54 x 0.24 in. (all other buttons)
Bushing Outer Diameter
0.35 in.
Bushing Inner Diameter
0.24 in.
Post Compatibility
0.24 in.