Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single delivers a refined fusion of classic vintage styling, precision tuning, and velvety smooth operation. Designed with open gear architecture and a precision worm gear, it elevates traditional design to modern engineering perfection.
Featuring an ultra-precise 1:18 gear ratio, this machine head provides pinpoint tuning stability and dependable longevity. The elimination of synthetic polymer coatings ensures optimal acoustic resonance across your instrument without wear or material aging.
Equipped with permanently locked, sealed screw joints and countersunk mounting holes, it guarantees maintenance-free performance, secure attachment, and uncompromised sound transmission for fine acoustic and classical instruments.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.11 lb |
| 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) | 0.8 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons) |
| Mounting Screws Included | 2 x countersunk mounting screws (M2.2 x 11) |
| Included Bushing | Hexagonal press-in bushing (0.35 in OD, 0.24 in ID) for solid headstocks |



















