Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage aesthetics with precise tuning response and smooth overall performance. Designed as an open-gear tuner with a precision worm drive, it incorporates an 18:1 gear ratio to deliver exceptional tuning accuracy and lasting stability.
Crafted without synthetic coatings, the tuner provides natural acoustic coupling that resonates cleanly across instrument headstocks. Ultra-precise contact surfaces offer smooth stick-slip operation free of wear, while permanently locked and sealed screw connections ensure maintenance-free performance.
Engineered to standard instrument dimensions for straightforward retrofit or installation, this tuner features countersunk mounting screw holes to establish a secure fit and optimum sound transmission. Built to professional luthier standards, it maintains consistent gear engagement across demanding playing conditions.
| Brand | Schaller |
| Model | GrandTune Single Tuner (GT-Single) |
| SKU | GT-Single |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Single Tuner | 0.6 oz (Koa), 0.7 oz (Pearloid), 0.7 oz (Galalith, Ebony), 0.7 oz (Snakewood), 0.9 oz (Butterbean) including press-in bushing |
| Button Dimensions (WxHxD) | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Weight | 0.1 lb |
| Mounting Screws | M2.2 x 11 mm countersunk screws |
| Bushing Outer Diameter | 0.3 in |
| Bushing Inner Diameter | 0.2 in |
| String Post Fitment | 0.2 in |
