Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune combines stylish vintage aesthetics with precise tuning response and smooth performance. Designed as an open-gear tuner with worm and gear mechanics, it delivers optimal acoustic resonance across your instrument without synthetic polymer coatings.
Featuring a precise 1:18 gear ratio, this tuning machine provides dependable accuracy and lasting durability. The permanently locked and sealed screw joints ensure wear-free and maintenance-free operation throughout its lifespan.
Crafted to standard serial instrument dimensions for straightforward installation and replacement, it includes countersunk screw holes that ensure firm mounting and enhanced tonal transmission.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Gear Ratio | 1:18 |
| Weight per Single Tuner | 0.63 oz (Koa), 0.67 oz (Perloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (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) |
| Mounting Type | Screw-in |
| Product Type | Guitar Tuning Machine |



















