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 tuner with an exposed worm gear and pinion, it delivers reliable tuning stability without synthetic polymer coatings, allowing for natural acoustic resonance.
Equipped with an 18:1 gear ratio, the mechanism provides precise adjustment and lasting durability. The precisely engineered contact surfaces and permanently locked, sealed screw joints ensure wear-free, maintenance-free performance throughout years of playing.
Built to match standard instrument dimensions for straightforward replacement or new installations, it features countersunk screw holes that ensure firm mounting and optimal acoustic energy transfer to the headstock.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 18:1 |
| Design | Open Gear |
| Product 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) |
| 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 (8.8 mm outer diameter, 6.1 mm inner diameter for 6.0 mm post) |
