Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single delivers an ideal combination of vintage aesthetics, tuning accuracy, and smooth operation. Featuring an open-gear architecture with a precise worm gear drive, it offers a 1:18 gear ratio for fine-tuning stability and lasting mechanical reliability.
Constructed without synthetic polymer coatings on its friction surfaces, this tuning machine provides excellent stick-slip properties without wear or aging. Permanently locked, sealed screw joints ensure maintenance-free performance while preserving optimal tonal resonance with the instrument.
Designed to fit standard production instrument dimensions, it enables straightforward installation and replacement. Countersunk screw holes ensure rigid mounting and direct vibration transfer across the headstock.
| Brand | Schaller |
| Model | GrandTune Einzelmechanik (GT-Single) |
| Product Type | Single Tuning Machine |
| Gear Ratio | 1:18 |
| Design | Open Gear |
| Weight per Single Tuner | 0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (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 Screws | 2 countersunk mounting screws per tuner (M2.2 x 11) |
| Included Bushing | 1 hexagonal press-in bushing for solid headstocks (0.35 in outer diameter, 0.24 in inner diameter) |
