Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage aesthetics with precise tuning stability and ultra-smooth operation. Designed as an open-gear tuner with worm gearing, it delivers dependable performance for fine instruments.
Featuring an 18:1 gear ratio, this tuning machine provides exceptional adjustment accuracy without relying on synthetic polymer coatings. The direct metal-to-metal contact and sealed screw joints ensure resonance transfer, wear resistance, and long-lasting tuning stability.
Crafted to standard production dimensions for straightforward installation and replacement, it includes countersunk screw holes and mounting hardware for solid and slotted headstocks.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| 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 | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Product Weight | 0.11 lb |
| Mounting Type | Open Gear Single Tuner |





















