Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune represents the ultimate fusion of vintage design, precise tuning accuracy, and velvet-smooth performance. This refined open-gear tuning machine incorporates an open worm gear system engineered for superior sound resonance and reliability.
Equipped with a precise 1:18 gear ratio, the mechanism provides exceptional tuning precision without synthetic polymer coatings. Ultra-precise fittings and permanently sealed screw joints ensure smooth, wear-free operation and maintenance-free longevity across all instrument types.
Designed to fit standard production instrument dimensions, it allows straightforward installation and direct replacement. Countersunk screw holes ensure firm anchoring and optimal resonance transfer directly into the headstock.
| Brand | Schaller |
| Model | GrandTune Single Tuner (GT-Single) |
| Gear Ratio | 1:18 |
| Product Weight | 0.11 lb |
| Weight per Single Tuner | 0.63 oz (Koa), 0.67 oz (Pearloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean) including 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) |
| Bushing Type | Hexagonal press-in bushing (0.35 in outer diameter, 0.24 in inner diameter) |
| Mounting Screws | Countersunk M2.2 x 11 mm (0.09 x 0.43 in) |
