Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single is an open-gear guitar tuning machine that combines classic vintage aesthetics with precise tuning performance. Built with an open gear and worm mechanism, it delivers smooth and reliable operation without synthetic coatings for pure acoustic resonance.
Featuring an ultra-precise 1:18 gear ratio, this machine head provides pinpoint tuning stability and extended durability. Precision-fitted contact surfaces eliminate stick-slip motion, while permanently locked and sealed screw joints ensure wear-free and maintenance-free longevity.
Designed to fit standard production instrument dimensions, it allows straightforward installation or replacement on solid and slotted headstocks. Recessed screw holes guarantee a secure hold and optimal acoustic transfer across acoustic, electric, and nylon-string guitars.
| Brand | Schaller |
| Model | GrandTune Einzelmechanik (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Gear Type | Open Gear |
| 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 (W x H x D) | 0.80 x 0.54 x 0.41 in. (Butterbean), 0.69 x 0.54 x 0.24 in. (all other buttons) |
| Included Bushing Outer Diameter | 0.35 in. |
| Included Bushing Inner Diameter | 0.24 in. |
| Mounting Screws | 2 x Countersunk (M2.2 x 0.43 in.) |
