Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single combines refined vintage styling with ultra-precise tuning performance and exceptionally smooth operation. Designed with an open-gear architecture and precision worm gear, it delivers an uncompromising 1:18 gear ratio for accurate and reliable tuning stability.
Crafted without synthetic polymer coatings, this tuning machine ensures direct resonance transfer and wear-free interaction across your instrument. The permanently sealed screw connections provide long-lasting, maintenance-free performance while preserving structural integrity over time.
Engineered to standard instrument dimensions for effortless installation and retrofitting, it features countersunk screw holes and high-grade mounting components for optimal acoustic contact and lasting durability.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
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)
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)
Included Bushing Outer Diameter
0.35 in
Included Bushing Inner Diameter
0.24 in
Compatible Post Diameter
0.24 in
Shipping Weight
0.11 lb