Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune combines refined vintage styling with precise tuning performance and ultra-smooth operation. Designed as a perfected open-gear tuning machine, it features an exposed gear and worm drive architecture crafted with exacting tolerances. The absence of synthetic coatings ensures pure acoustic resonance transfer throughout the headstock.
With a precise 1:18 gear ratio, this tuning machine provides dependable tuning stability and fine adjustment accuracy. Its permanently locked, sealed, and joined components deliver maintenance-free, wear-resistant performance engineered to endure alongside fine instruments. Recessed screw holes further ensure solid attachment and superior resonance transfer.
Designed around standard production guitar dimensions for straightforward installation and retrofitting, each unit includes mounting screws and a hexagonal press-in bushing for solid headstock installations.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Product Weight | 0.11 lb |
| Weight per Unit | 18 g (Koa), 19 g (Perloid), 20 g (Galalith, Ebony), 21 g (Snakewood), 25 g (Butterbean) including bushing |
| Button Dimensions | 0.80 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons) |
| Mounting Screws | 2 countersunk mounting screws per tuner (M2.2 x 11) |
| Bushing | 1 hexagonal press-in bushing per tuner for solid headstocks (OD 0.35 in, ID 0.24 in, fits 0.24 in string post) |
