Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune combines classic vintage styling with precise tuning stability and ultra-smooth operation. Designed with open gears and a worm screw mechanism, it delivers a refined aesthetic that matches traditional and modern instruments alike.
Featuring a precise 1:18 gear ratio, this tuning machine provides exceptional tuning accuracy and lasting durability. The design eliminates synthetic polymer coatings, allowing metal components to interact with optimal resonance and zero stick-slip friction.
Equipped with permanently locked, sealed screw joints and countersunk mounting holes, the GrandTune ensures maintenance-free performance and superior mechanical stability directly onto the headstock.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.11 lb |
| Weight per Single Tuner | 18 g (Koa), 19 g (Perloid), 20 g (Galalith, Ebony), 21 g (Snakewood), 25 g (Butterbean) including bushing |
| Button Dimensions (Butterbean) | 0.80 x 0.54 x 0.41 in |
| Button Dimensions (Other) | 0.69 x 0.54 x 0.24 in |
| Mounting Screws Included | 2 x countersunk mounting screws (M2.2 x 11) |
| Bushing Included | 1 x hexagonal press-in bushing, OD 0.35 in (ID 0.24 in, fits 0.24 in post) |





















