Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage styling with ultra-precise tuning response and velvet-smooth performance. Built as an open-gear tuner with a precision worm drive, it delivers premium tuning accuracy and resonance without synthetic polymer coatings.
Featuring an 18:1 gear ratio, the GrandTune provides precise control, zero wear, and lasting durability. Its permanently locked, sealed screw joints ensure completely maintenance-free operation across the lifespan of your instrument.
Engineered to standard instrument dimensions for straightforward replacement and installation, this tuner features countersunk screw holes that ensure solid mounting and direct acoustic transmission.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| SKU | 10510770.49.12 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| 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 (WxHxD) | 0.80 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons) |
| Mounting Type | Screw-in open gear with press-in bushing |





















