Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage styling with precise tuning response and ultra-smooth operation. Designed as an open-gear tuner with an open gear and worm drive, it provides exceptional resonance and tone transfer across acoustic and electric instruments.
Equipped with an 18:1 gear ratio, this tuning machine delivers high tuning accuracy and long-term durability. The design eliminates synthetic polymer coatings in favor of ultra-precise contact surfaces, preventing wear and ensuring smooth stick-slip performance over years of play.
Engineered to standard instrument dimensions for straightforward replacement or installation, each unit features permanently locked and sealed screw joints for zero-maintenance operation, countersunk mounting holes, and included installation hardware.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 18:1 |
| Product Weight | 0.1 lb |
| Button Dimensions | 0.80 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons) |
| Mounting Screws | 2 x countersunk mounting screws per single machine (M2.2 x 11) |
| Bushing | 1 x hexagonal press-in bushing per single machine for solid headstocks (0.35 in outer diameter, 0.24 in inner diameter) |
