Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines stylish vintage design with ultra-precise tuning behavior and smooth performance. Featuring a perfected open-gear architecture with a precision worm screw, it delivers outstanding resonance and reliability for high-end instruments.
With an exact 1:18 gear ratio, this machine head provides pinpoint tuning accuracy and long-term durability. Its non-coated contact surfaces and precision fit eliminate wear, allowing the tuning assembly to resonate naturally and age gracefully with your guitar.
Equipped with permanently locked, sealed screw joints and countersunk mounting holes, the GrandTune offers maintenance-free operation and solid tone transfer. Designed around standard serial instrument dimensions, it integrates smoothly for upgrades or custom builds.
| Brand | Schaller |
| Model | GrandTune (GT-Single) |
| Type | Single Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.11 lb |
| Weight per Single Unit | 0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (Butterbean) |
| 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) |
| Bushing Dimensions | Hexagonal press-in bushing, outer diameter 0.35 in, inner diameter 0.24 in (fits 0.24 in post) |
| Mounting Hardware | 2 countersunk mounting screws (M2.2 x 11 mm) |
