Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune combines refined vintage aesthetics with precise tuning response and ultra-smooth operation. Designed as an open-gear tuner with worm gear architecture, it delivers exceptional resonance and classic style for discerning instruments.
Featuring an 18:1 gear ratio, this tuning machine provides pinpoint accuracy and long-term durability. The design avoids synthetic coatings on contact points, ensuring natural tone transmission and smooth, wear-resistant mechanical movement over years of playing.
Built with permanently locked and sealed screw connections, the unit offers maintenance-free performance. Standard dimensions allow for straightforward installation and replacement on solid or slotted headstock instruments.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Single Tuner | 0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (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 Screws Included | 2 x countersunk mounting screws (M2.2 x 11) |
| Bushing Specifications | 1 x hexagonal press-in bushing, 0.35 in outer diameter, 0.24 in inner diameter (for 0.24 in post) |
| Product Weight | 0.11 lb |





















