Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune combines stylish vintage aesthetics with precise tuning response and ultra-smooth operation. Designed as an open-gear tuner with a precision worm gear mechanism, it provides an optimal blend of classic design and modern acoustic performance.
Featuring an 18:1 gear ratio, this tuning machine delivers high accuracy and exceptional durability. The omission of synthetic coatings enables complete structural resonance, allowing the tuner to enhance instrument tone while maintaining wear-free mechanical engagement.
Ultra-precise contact surfaces eliminate stick-slip friction without polymer layers. Sealed and permanently locked screw joints ensure maintenance-free longevity, and standard dimensions allow direct installation or replacement on production instruments.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 18:1 |
| Configuration | Single Tuning Machine |
| Weight | 0.06 lb |
| Button Dimensions (Butterbean) | 0.80 x 0.54 x 0.41 in |
| Button Dimensions (Standard) | 0.69 x 0.54 x 0.24 in |
| Mounting Hardware | 2 countersunk mounting screws (M2.2 x 11 mm) |



















