Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single delivers a refined blend of classic vintage aesthetics, precise tuning stability, and exceptionally smooth performance. Engineered as an open-gear tuner with a precision worm gear, it offers an optimal 1:18 gear ratio for accurate and durable pitch adjustment.
Crafted without synthetic polymer coatings, this tuning machine provides flawless stick-slip action and uninhibited acoustic resonance across the headstock. Sealed, permanently locked screw joints ensure long-lasting, wear-free, and maintenance-free operation over years of active playing.
Designed with standard instrument dimensions, it enables straightforward installation or direct retrofitting on fine acoustic and electric guitars. Recessed screw holes facilitate solid anchoring and superior vibrational transfer directly into the wood.
| Brand | Schaller |
| Model | GrandTune Einzelmechanik (GT-Single) |
| Gear Ratio | 1:18 |
| Type | Open Gear Single Tuning Machine |
| Weight | 0.11 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 (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) |
| Mounting Screws Included | 2 x Countersunk Screws (M2.2 x 11 mm / 0.43 in) |
| Bushing | Hexagonal Press-In Bushing (Outer Diameter 0.35 in / 8.8 mm, Inner Diameter 0.24 in / 6.1 mm) |
