Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines classic vintage open-gear aesthetics with modern precision tuning performance. Designed without synthetic coatings, it delivers pure acoustic resonance and smooth operation on any instrument.
Equipped with an ultra-precise 1:18 gear ratio, this machine head offers exceptional tuning accuracy, stability, and durability. Permanently locked and sealed fittings ensure maintenance-free performance without wear or aging over time.
Crafted to standard production instrument dimensions, it allows for easy installation or retrofitting, featuring countersunk screw holes for solid mounting and optimal tonal transfer.
| Brand | Schaller |
| Model | GrandTune (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.7 lb |
| Weight per Single Tuner | 0.6 oz (Koa), 0.7 oz (Perloid), 0.7 oz (Galalith, Ebony), 0.7 oz (Snakewood), 0.9 oz (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) |
| Mounting Type | Open Gear / Screw-in with Bushing |





















