Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single offers a refined combination of classic open-gear vintage aesthetics and ultra-precise tuning performance. Engineered with an open gear and worm gear architecture, it ensures velvet-smooth operation and superior mechanical stability for demanding instruments.
Featuring a precise 1:18 gear ratio, this tuning machine delivers high accuracy and exceptional longevity. Built without synthetic coatings, the components provide optimal acoustic resonance, while permanently locked and sealed screw connections guarantee completely maintenance-free, wear-free performance.
Designed with standard instrument dimensions, the GrandTune Single allows for straightforward installation and replacement on solid and slotted headstocks. Countersunk screw holes ensure a firm hold and optimal tone transfer across the entire headstock.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | GrandTune Einzelmechanik (GT-Single) |
| Gear Ratio | 1:18 |
| Weight | 0.11 lb |
| 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) | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Design | Open gear |





















