Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines classic vintage styling with modern precision engineering and smooth performance. Featuring an open-gear design with worm screw architecture, it delivers exceptional tuning stability and longevity without reliance on synthetic coatings.
With a precise 1:18 gear ratio, this tuning machine provides fine adjustment and velvety response. Its ultra-precise fitments and contact surfaces ensure optimal stick-slip properties without wear, allowing natural resonance across your instrument.
Equipped with permanently locked, sealed screw joints and countersunk mounting holes, the GrandTune guarantees a secure fit, maintenance-free longevity, and superior sound transmission for acoustic and electric guitars.
| Brand | Schaller |
| Model | GT-Single |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Design | Open Gear |
| Weight per Single Tuner | 0.6 oz (Koa), 0.7 oz (Perloid), 0.7 oz (Galalith, Ebony), 0.7 oz (Snakewood), 0.9 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) |
| Mounting Screws Included | 2 x Countersunk Screws (M2.2 x 11) |
| Bushing Included | Hexagonal Press-In Bushing (0.3 in / 8.8 mm Outer Diameter) |





















