Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage styling with precise tuning response and smooth performance. Engineered as an open-gear tuner with a precision worm drive, it provides exceptional acoustic coupling and resonance across any instrument.
Featuring an 1:18 gear ratio, this tuning machine delivers high tuning stability and pinpoint accuracy. The design eliminates synthetic polymer coatings on contact surfaces to maximize string resonance, ensuring wear-free operation and sustained tonal transfer throughout the instrument's lifespan.
Built to standard production instrument dimensions, the assembly features permanently sealed screw connections and countersunk mounting holes for a secure fit. Included mounting screws and hexagonal press-in bushings allow seamless installation or retrofitting on compatible solid headstocks.
| Brand | Schaller |
| Model | GrandTune (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Gear Type | Open Gear |
| 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) | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Mounting Screws Included | 2x countersunk M2.2 x 11 mm per tuner |
| Press-In Bushing Outer Diameter | 0.35 in (hexagonal) |
| Press-In Bushing Inner Diameter | 0.24 in (for 0.24 in post) |
| Product Weight | 0.67 lb |
