Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single Guitar Tuning Machine represents a refined balance of classic open-gear vintage aesthetics and ultra-precise modern tuning performance. Featuring an exact 1:18 gear ratio, it ensures velvet-smooth operation, outstanding tuning stability, and exceptional longevity without synthetic polymer coatings.
Equipped with permanently locked, sealed screw joints and precision contact surfaces, this tuning machine delivers wear-free and maintenance-free functionality. The countersunk screw holes and high-grade materials maximize mechanical resonance and tonal transfer across the headstock.
Engineered to standard instrument dimensions for straightforward installation, this single tuner is ideal for replacements, custom configurations, and multi-string setups. It includes high-precision mounting hardware to maintain solid anchoring and consistent string tension.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Single Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Gear Design | Open Gear with Worm Screw |
| Mounting Type | Screw-in with Press-in Bushing |
| 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 bushing |
| Button Dimensions (Butterbean) | 0.80 x 0.54 x 0.41 in (20.4 x 13.8 x 10.4 mm) |
| Button Dimensions (Standard) | 0.69 x 0.54 x 0.24 in (17.6 x 13.7 x 6.1 mm) |
| Bushing Outer Diameter | 0.35 in (8.8 mm) |
| Bushing Inner Diameter | 0.24 in (6.1 mm) |
| Included Screws | 2 x Countersunk Mounting Screws (M2.2 x 11 mm) |
| Product Weight | 0.11 lb |
