Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single combines classic vintage open-gear aesthetics with precise modern engineering and smooth performance. Featuring a precise 1:18 gear ratio, it provides exact, velvety tuning stability and enduring reliability for demanding musicians.
Crafted without synthetic polymer coatings, the ultra-precise contact surfaces ensure optimal stick-slip movement without wear or degradation. Permanently locked, sealed screw joints deliver maintenance-free operation while standard instrument dimensions ensure straightforward installation.
Equipped with countersunk screw holes for solid acoustic coupling, each unit comes complete with mounting screws and press-in bushings for solid headstock setups.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.11 lb |
| Weight per Single Tuner | 0.63 oz (Koa), 0.67 oz (Pearloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean) including bushing |
| Button Dimensions (Butterbean) | 0.80 x 0.54 x 0.41 in |
| Button Dimensions (Standard) | 0.69 x 0.54 x 0.24 in |
| Mounting Screws | 2 x countersunk mounting screws (M2.2 x 11 mm) |
| Bushing | 1 x hexagonal press-in bushing for solid headstocks, OD 0.35 in (ID 0.24 in, fits 0.24 in post) |





















