Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single Guitar Tuning Machine combines classic vintage aesthetics with refined tuning precision and ultra-smooth performance. Featuring an open-gear architecture with a worm gear design, it delivers an optimal 1:18 gear ratio for precise and reliable tuning stability.
Crafted without synthetic polymer coatings, this tuning machine ensures direct resonance transfer and wear-free operation across the life of your instrument. Sealed and permanently locked screw joints provide maintenance-free durability while preserving traditional look and feel.
Engineered to standard instrument dimensions for straightforward installation or replacement, it features countersunk screw holes that ensure firm mounting and optimal acoustic transmission.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Gear Ratio | 1:18 |
| Type | Single Guitar Tuning Machine |
| 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) |
| Included Hardware | 2 countersunk mounting screws (M2.2 x 11), 1 hexagonal press-in bushing (for solid headstock versions) |
