Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single combines refined vintage styling with precise, velvety-smooth tuning performance. Designed with an open gear and worm mechanism, this perfected classic machine head delivers uncompromised resonance and stability across a wide range of acoustic and electric guitars.
Featuring an ultra-precise 1:18 gear ratio, the GrandTune ensures exceptional tuning accuracy and longevity. Its high-precision contact surfaces operate without polymer coatings to preserve pure acoustic resonance, while permanently locked and sealed screw joints provide completely wear-free, maintenance-free operation.
Engineered to standard instrument dimensions for effortless replacement and installation, this tuner features countersunk screw holes for solid mounting and optimal tonal transfer. Selected configurations include specialized String Roller Deluxe posts with ball bearings that eliminate friction and noise on slotted headstocks.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Mechanism Type | Open Gear |
| 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 |
| Butterbean Button Dimensions (W x H x D) | 0.80 x 0.54 x 0.41 in |
| Standard Button Dimensions (W x H x D) | 0.69 x 0.54 x 0.24 in |
| Mounting Screw Size | M2.2 x 11 mm |
| Hex Bushing Outer Diameter | 0.35 in |
| Hex Bushing Inner Diameter | 0.24 in |
