Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune represents an exceptional combination of refined vintage design, precise tuning accuracy, and velvet-smooth performance. Built as an open-gear tuning machine with precision worm gears, it offers a refined solution for high-end acoustic and electric instruments.
An ultra-precise 1:18 gear ratio provides outstanding control and durability without synthetic coatings, allowing the instrument to resonate naturally. Permanently locked, sealed screw joints ensure long-lasting, maintenance-free operation that resists aging and mechanical wear over time.
Designed around standard production guitar dimensions for straightforward installation, each unit features countersunk screw holes that deliver optimal acoustic coupling and rock-solid mounting stability.
| Brand | Schaller |
| Model | GrandTune (GT-Single) |
| Product Type | Guitar Tuning Machine |
| SKU | GT-Single |
| Gear Ratio | 1:18 |
| Weight | 0.67 lb |
| Weight per Single Machine | 0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (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 (all other buttons) |
| Mounting Bushing Outer Diameter | 0.35 in |
| Mounting Bushing Inner Diameter | 0.24 in |
| String Post Fit Diameter | 0.24 in |
