Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single delivers an exquisite blend of refined vintage aesthetics, pinpoint tuning accuracy, and velvet-smooth performance. Built as an open-gear tuner with an ultra-precise worm gear mechanism, it provides an outstanding 1:18 gear ratio for durable and exact tuning stability.
Crafted without synthetic polymer coatings, its precision-machined contact surfaces eliminate wear and aging while preserving natural resonance across the entire headstock. Permanently locked, sealed, and countersunk screw fittings ensure reliable acoustic coupling and completely maintenance-free operation.
Engineered to standard instrument dimensions for effortless replacement and installation, this tuning machine seamlessly accommodates solid or slotted headstocks. It brings exceptional tone transfer, robust mechanical integrity, and timeless craftsmanship to premium guitars.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | GrandTune Single (GT-Single) |
| Gear Ratio | 1:18 |
| Weight | 0.67 lb |
| 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 | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Mounting Screw Dimensions | M2.2 x 11 mm |
| Press-In Bushing Outer Diameter | 0.35 in (8.8 mm) |
| Press-In Bushing Inner Diameter | 0.24 in (6.1 mm) |
