Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage aesthetics with precise tuning performance and velvety smooth action. Engineered as an open-gear tuner with worm and gear mechanics, it delivers uncompromising accuracy and lasting reliability on any instrument.
Featuring an 18:1 gear ratio, the GrandTune provides ultra-fine tuning control without relying on synthetic polymer coatings. Ultra-precise contact surfaces ensure optimal stick-slip friction and pure resonance transfer throughout the headstock.
Built to fit standard instrument dimensions for effortless installation or retrofitting, each unit features countersunk screw holes and permanently sealed screw joints for zero-maintenance operation.
| Brand | Schaller |
| Product Line | GrandTune |
| Product Type | Guitar Tuning Machine |
| Model | GrandTune Single (GT-Single) |
| Gear Ratio | 1:18 |
| Type | Open-Gear |
| Mounting Hardware | Countersunk Screws (M2.2 x 11), Press-in Bushing |
| 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 (Other Buttons) |



















