Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines classic vintage styling with precise tuning response and smooth performance. Featuring an open-gear design with worm screw architecture, it delivers exceptional durability and resonant contact on acoustic and electric instruments without synthetic coatings.
A 1:18 gear ratio ensures accurate, fine-increment tuning and long-term stability. The ultra-precise fittings, sealed screw connections, and countersunk mounting holes provide maintenance-free operation and direct sound transmission to the headstock.
Designed to fit standard production instrument specifications, this single tuning machine enables straightforward installation and replacement. Included mounting screws and high-precision bushings support dependable, wear-free performance.
| Brand | Schaller |
| Model | GrandTune (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Design | Open Gear |
| Weight per Machine | 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) |
| Mounting Hole Configuration | Countersunk screw holes |
| Included Hardware | 2 mounting screws (M2.2 x 0.43 in), 1 hexagonal press-in bushing (0.35 in outer diameter, 0.24 in inner diameter) |
