Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines stylish vintage design with precise tuning behavior and velvet-smooth performance. Built as an open-gear tuning machine with a worm gear mechanism, it delivers classic aesthetics paired with cutting-edge engineering for superior resonance.
Featuring a 1:18 gear ratio, this tuning machine provides uncompromised precision and longevity. The design avoids synthetic polymer coatings to ensure natural instrument resonance, wear-free interaction, and outstanding tuning stability over years of playing.
Equipped with permanently locked, sealed screw joints and countersunk mounting holes, the GrandTune guarantees reliable sound transmission and maintenance-free operation while matching standard instrument dimensions for effortless replacement.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | GrandTune Single (GT-Single) |
| Gear Ratio | 1:18 |
| Weight | 0.11 lb |
| Button Dimensions | 0.8 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (other buttons) |
| Design | Open-gear |



















