Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single Guitar Tuning Machine pairs classic open-gear vintage architecture with advanced engineering for precise tuning stability. Built with an open gear and worm design, it eliminates polymer coatings to achieve direct resonance and flawless acoustic transmission across the headstock.
A precision 1:18 gear ratio provides ultra-smooth, wear-free performance and accurate pitch control. Permanently locked, sealed screw joints ensure maintenance-free longevity, while standard production dimensions and recessed screw holes allow straightforward installation and optimal instrument coupling.
Solid headstock configurations include a 0.35 in hexagonal press-in bushing and mounting screws for complete assembly. Tailored specifically for steel-string, acoustic, and specialized guitars, this single tuner provides exceptional durability and vintage visual appeal.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.1 lb |
| Single Tuner Weight | 0.6 oz (Koa), 0.7 oz (Perloid), 0.7 oz (Galalith, Ebony), 0.7 oz (Snakewood), 0.9 oz (Butterbean) |
| Button Dimensions | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Included Screws | 2 x Countersunk mounting screws per tuner (M2.2 x 11) |
| Press-In Bushing Outer Diameter | 0.35 in (hexagonal) |
| Press-In Bushing Inner Diameter | 0.24 in |
| Country of Origin | Germany |
