Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune tuning machine delivers an ideal synthesis of refined vintage styling, ultra-precise tuning response, and velvety-smooth mechanical performance. Featuring an open-gear architecture with a worm gear drive, it provides dependable tuning stability without synthetic polymer coatings for optimal acoustic resonance transfer.
Equipped with an 18:1 gear ratio, this machine head enables exacting tuning precision and enduring longevity. Sealed, permanently locked screw fittings ensure wear-resistant, maintenance-free operation across years of regular playing.
Engineered to standard instrument dimensions, the GrandTune integrates seamlessly into most series-production guitars with countersunk mounting holes for a stable hold and resonant contact.
| Brand | Schaller |
| Model | GrandTune (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Single Tuner Weight | 0.6 oz (Koa), 0.7 oz (Pearloid), 0.7 oz (Galalith, Ebony), 0.7 oz (Snakewood), 0.9 oz (Butterbean) including bushing |
| Button Dimensions (W x H x D) | 0.80 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons) |
| Included Mounting Screws | 2 x countersunk mounting screws per single machine (M2.2 x 11 mm) |
| Included Bushing | 1 x press-in hexagonal bushing per single machine for solid headstocks (OD 0.35 in / 8.8 mm, ID 0.24 in / 6.1 mm) |
| Weight | 0.11 lb |
