Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single represents the ultimate combination of vintage design, precise tuning, and smooth performance. Featuring an open-gear design with worm screw construction, it delivers an 18:1 gear ratio for smooth, accurate adjustments without synthetic coatings.
Ultra-precise fittings and contact surfaces provide stick-slip-free movement without wear or degradation over time. The permanently locked and sealed screw joints ensure maintenance-free reliability, while countersunk screw holes provide solid anchoring and optimal resonance transfer.
Designed to fit standard production instruments, it includes countersunk mounting screws and hexagonal press-in bushings for solid headstocks. This premium single tuning machine offers exceptional stability and tone preservation for various guitar configurations.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Gear Ratio | 1:18 |
| Weight per Single Tuner | 0.6 oz (Koa), 0.7 oz (Perloid), 0.7 oz (Galalith, Ebony), 0.7 oz (Snakewood), 0.9 oz (Butterbean) including bushing |
| Button Dimensions (WxHxD) | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Mounting Screw Size | M2.2 x 11 mm |
| Press-in Bushing Outer Diameter | 0.3 in |
| Press-in Bushing Inner Diameter | 0.2 in |
