Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage styling with precise tuning accuracy and ultra-smooth operation. Designed as an open-gear tuner with a precision worm gear, it delivers exceptional acoustic resonance without synthetic polymer coatings dampening the instrument.
Featuring an 18:1 gear ratio, this tuning machine provides uncompromising stability, smooth adjustment, and enduring performance. Permanently locked and sealed screw joints ensure completely maintenance-free and wear-free operation across years of play.
Crafted to standard serial instrument dimensions for direct retrofit or custom builds, the GrandTune features countersunk screw holes that ensure firm contact and optimal sound transmission to the headstock.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 18:1 |
| Design | Open Gear |
| Mounting Type | Countersunk Screw Mount |
| Weight per Tuner | 0.63 oz - 0.88 oz (depending on button) |
| Product Weight | 0.11 lb |
| Butterbean Button Dimensions | 0.8 in x 0.54 in x 0.41 in |
| Standard Button Dimensions | 0.69 in x 0.54 in x 0.24 in |





















