Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines refined vintage aesthetics with precise tuning performance and smooth operation. Designed as an open-gear tuning machine with a precision worm gear, it delivers exceptional resonance and tonal integrity across acoustic, classical, and electric guitars without synthetic coatings.
Featuring a 1:18 gear ratio, this tuning machine provides ultra-precise, velveteen tuning stability. Ultra-precise contact surfaces eliminate stick-slip motion and wear, while permanently locked and sealed screw connections ensure completely maintenance-free reliability over extended use.
Crafted to standard serial instrument dimensions for seamless installation or replacement, each tuner incorporates countersunk mounting screw holes for secure anchoring and optimized sound transmission directly to the headstock.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Tuner Type | Open Gear |
| Weight per Single Tuner | 0.6 oz (Koa), 0.7 oz (Perloid), 0.7 oz (Galalith, Ebony), 0.7 oz (Snakewood), 0.9 oz (Butterbean) including bushing |
| Button Dimensions (WxHxD) | 0.80 x 0.54 x 0.41 in (Butterbean), 0.69 x 0.54 x 0.24 in (all other buttons) |
| Total Weight | 0.7 lb |
| Mounting Screws Included | 2 countersunk mounting screws per tuner (M2.2 x 11 mm) |
| Included Bushing | 1 hexagonal press-in bushing (OD 0.35 in, ID 0.24 in, fits 0.24 in string post) for solid headstocks |
