Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune represents the ultimate fusion of stylish vintage design, precise tuning response, and velvety smooth performance. Engineered as a perfected open-gear tuning machine, it features an open worm gear assembly crafted with ultra-precise fittings and contact surfaces without synthetic coatings, creating optimal stick-slip properties free from wear or aging.
Its 1:18 gear ratio delivers unmatched precision, tuning stability, and long-lasting performance. With permanently locked, sealed, and covered screw joints, this maintenance-free tuner functions as an acoustically resonant unit that preserves the natural resonance and tonal quality of your instrument.
Designed around standard production instrument dimensions, the GrandTune allows for straightforward installation or replacement. It features countersunk screw holes for a secure fit and optimal sound transmission, ensuring reliable performance across solid and slotted headstock configurations.
| Brand | Schaller |
| Model | GrandTune Single (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 press-in bushing |
| Button Dimensions (WxHxD) | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Mounting Screws Included | 2 countersunk mounting screws per single tuner (M2.2 x 11) |
| Bushing Included | 1 hexagonal press-in bushing per single tuner for solid headstocks (Outer diameter 0.35 in, inner diameter 0.24 in, for 0.24 in post) |
| Product Weight | 0.11 lb |
