Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune represents the ultimate fusion of vintage styling, pinpoint tuning accuracy, and velvet-smooth performance. Designed as a perfected open-gear tuning machine, it features precision-cut open gears and a worm drive architecture for unmatched musical resonance.
A gear ratio of 1:18 delivers exceptional fine-tuning precision and outstanding longevity. Built without synthetic coatings, the GrandTune creates optimal stick-slip properties that eliminate wear while maintaining flawless tonal resonance across any instrument.
Engineered to standard instrument specifications for smooth installation and direct retrofitting, it features permanently locked and sealed screw joints along with countersunk screw holes for rigid mounting and direct acoustic transfer.
| Brand | Schaller |
| Model | GrandTune Single Tuning Machine (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Single Tuner | 0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (Butterbean) including bushing |
| Button Dimensions | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Mounting Screws | 2 x Countersunk Screws (M2.2 x 0.4 in) |
| Bushing Outer Diameter | 0.35 in |
| Bushing Inner Diameter | 0.24 in |
| Compatible Post Diameter | 0.24 in |
