Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single represents the ultimate combination of stylish vintage design, precise tuning behavior, and velvet-smooth performance. It is a perfected open-gear tuning machine featuring an exposed gear and worm screw design.
With a precise 1:18 gear ratio, this tuner delivers unmatched tuning accuracy and long-lasting durability. The complete absence of synthetic polymer coatings allows the tuner to act as a resonant extension of your instrument, offering seamless interaction that preserves tone and appearance.
Designed with standard instrument dimensions for trouble-free installation and replacement, each unit features permanently locked and sealed screw connections along with countersunk screw holes for reliable stability and optimal sound transmission.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Gear Ratio | 1:18 |
| Type | Open Gear Tuning Machine |
| Product Weight | 0.11 lb |
| Single Tuner Weight | 18 g (0.63 oz) to 25 g (0.88 oz) depending on button material, including bushing |
| Button Dimensions (Butterbean) | 0.80 x 0.54 x 0.41 in (20.4 x 13.8 x 10.4 mm) |
| Button Dimensions (Standard) | 0.69 x 0.54 x 0.24 in (17.6 x 13.7 x 6.1 mm) |
| Hexagonal Bushing Outer Diameter | 0.35 in (8.8 mm) |
| Hexagonal Bushing Inner Diameter | 0.24 in (6.1 mm) |
| Mounting Screws | 2x Countersunk screws per tuner (M2.2 x 11) |
