Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single Guitar Tuning Machine combines vintage open-gear aesthetics with modern engineering and velvety performance. Designed with an open gear and worm drive, it provides ultra-precise tuning response without synthetic polymer coatings for pure acoustic resonance.
Equipped with an 1:18 gear ratio, this tuning machine delivers high tuning stability, smooth operation, and wear-free longevity. Permanently locked, sealed screw joints ensure maintenance-free performance on acoustic, classical, electric, and archtop guitars.
Standard mounting dimensions enable straightforward retrofitting and installation on series instruments. Countersunk screw holes ensure secure contact and optimal acoustic coupling to the headstock.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Design | Open Gear |
| Weight | 0.11 lb |
| Button Dimensions | 0.8 x 0.5 x 0.4 in (Butterbean) |
| Mounting Type | Screw-in with Bushing |



















