Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage aesthetics with precise tuning response and smooth operation. Designed as an open-gear tuner featuring an open worm gear and worm screw architecture, it delivers exceptional tonal resonance across acoustic and electric instruments without synthetic polymer coatings.
Equipped with an ultra-precise 1:18 gear ratio, this tuning machine provides velvety-smooth action, wear-free performance, and reliable tuning stability. Permanently locked, sealed screw joints ensure maintenance-free longevity, while standard production dimensions and countersunk screw holes facilitate effortless installation and secure contact on your headstock.
Engineered for discerning guitarists and luthiers, the GrandTune is supplied with mounting screws and press-in bushings for solid headstocks. Advanced engineering minimizes friction and noise, ensuring uninhibited string post rotation and pure acoustic resonance.
| Brand | Schaller |
| Model | GrandTune (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Gear Construction | Open Gear |
| Weight | 0.11 lb |
| Weight per Single Tuner | 0.04 lb (Koa), 0.04 lb (Perloid), 0.04 lb (Galalith, Ebony), 0.05 lb (Snakewood), 0.06 lb (Butterbean) including press-in bushing |
| Button Dimensions (W x H x D) | 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 | 2 x countersunk mounting screws (M2.2 x 11 mm) |
| Press-In Bushing Outer Diameter | 0.35 in |
| Press-In Bushing Inner Diameter | 0.24 in |
