Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage styling with ultra-precise tuning response and velvet-smooth operation. Designed as an open-gear tuning machine with a classic worm gear mechanism, it delivers premium tuning stability and resonance across a wide variety of stringed instruments.
Featuring a 1:18 gear ratio, the GrandTune provides exact control and long-lasting durability. Its precision-engineered contact surfaces eliminate the need for synthetic polymer coatings, ensuring wear-free operation, optimal vibration transfer, and seamless acoustic coupling to the headstock.
Built with permanently locked, sealed joints and countersunk screw holes, this tuner provides maintenance-free performance and secure mounting. Standardized dimensions make it a direct, hassle-free replacement or upgrade for serial production and custom instruments alike.
| Brand | Schaller |
| Model | GrandTune (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| 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 (Butterbean) | 0.80 x 0.54 x 0.41 in |
| Button Dimensions (Standard) | 0.69 x 0.54 x 0.24 in |
