Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage styling with precise tuning response and ultra-smooth operation. Designed as an open-gear tuning machine, it features a 1:18 gear ratio that provides exceptional precision, resonance, and long-lasting durability.
Crafted without synthetic polymer coatings, the ultra-precise contact surfaces maintain optimal stick-slip properties without wear or aging. Permanently locked, sealed screw joints ensure maintenance-free performance while preserving direct mechanical resonance across your instrument.
Engineered to standard instrument dimensions for straightforward installation and replacement, this tuning machine features countersunk mounting holes for solid acoustic coupling and stable string tension.
| Brand | Schaller |
| Model | GrandTune (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Tuning Machine Weight | 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 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Bushing Specifications | Hexagonal press-in bushing, outer diameter 0.35 in, inner diameter 0.24 in, for 0.24 in string post |
| Included Screws | 2 countersunk mounting screws (M2.2 x 11 mm) |
| Weight | 0.11 lb |
