Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune combines stylish vintage design with precise tuning accuracy and ultra-smooth performance. Built as a perfected classic open-gear tuning machine, it features an exposed gear and worm drive engineered for exceptional responsiveness and reliability.
A precise 1:18 gear ratio provides outstanding tuning stability, fine adjustment capability, and long-lasting durability. The deliberately unplated contact surfaces avoid synthetic polymer coatings, allowing each component to interact seamlessly without wear or aging while maximizing instrument resonance.
Equipped with permanently locked and sealed screw connections, the assembly offers maintenance-free longevity. Counterbored mounting screw holes ensure solid anchor stability and optimal acoustic tone transmission to the headstock.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | GrandTune Einzelmechanik (GT-Single) |
| Gear Ratio | 1:18 |
| Weight per Unit | 0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean) including bushing |
| 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 Hardware | 2 x M2.2 x 11 mm mounting screws, 1 x 0.35 in hexagonal press-in bushing (for solid headstock) |
| Bushing Dimensions | Outer diameter 0.35 in, inner diameter 0.24 in, fits 0.24 in post |
