Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single Guitar Tuning Machine combines vintage open-gear aesthetics with precise engineering. Built with an open gear and worm design, its 1:18 gear ratio delivers smooth tuning performance and exceptional tuning stability. Eliminating synthetic polymer coatings allows direct resonance and pure tone transmission to your instrument.
Crafted for lasting durability, the GrandTune features permanently locked, sealed screw joints that ensure wear-free and maintenance-free operation. Ultra-precise contact surfaces provide optimal stick-slip properties without degradation over time, while countersunk screw holes provide firm mounting and optimal acoustic coupling.
Designed to fit standard production instrument dimensions, this single tuner allows straightforward installation or replacement. Each solid headstock unit includes countersunk mounting screws and a hexagonal press-in bushing for accurate alignment and reliable operation.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Gear 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) | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Bushing Type | Hexagonal press-in bushing |
| Bushing Dimensions | Outer diameter 0.35 in, inner diameter 0.24 in, for 0.24 in posts |
| Mounting Screws Included | 2 x countersunk mounting screws (M2.2 x 11 mm) |
