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 tuning machine with a perfected worm gear architecture, it delivers exceptional resonance and reliable tuning stability for premium instruments.
Equipped with an 18:1 gear ratio, the GrandTune provides precise control and long-lasting durability. The design eliminates synthetic polymer coatings on contact surfaces to maximize acoustic energy transfer, creating a wear-free mechanism that maintains optimal performance over extended playing time.
Engineered to standard instrument dimensions for straightforward installation and replacement, each tuner features permanently locked and sealed screw joints along with countersunk screw holes for secure mounting and maximum vibration transmission.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Single Tuner | 0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (Butterbean) including bushing |
| 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) |
| Included Bushing Outer Diameter | 0.35 in |
| Included Bushing Inner Diameter | 0.24 in |
| Mounting Hardware | 2 countersunk mounting screws per tuner (M2.2 x 11 mm) |
