Schaller GrandTune Guitar Tuning Machine
The Schaller GrandTune combines classic open-gear vintage aesthetics with precision engineering and velvety-smooth operation. Designed without synthetic coatings, these tuners preserve optimal instrument resonance while delivering exceptional tuning stability.
Featuring a precise 1:18 gear ratio, the GrandTune provides ultra-fine tuning accuracy and enduring durability. Permanently locked, sealed, and covered screw joints ensure wear-free, maintenance-free performance throughout years of playing.
Crafted to standard production instrument dimensions, these single tuning machines allow for seamless installation and replacement. Countersunk screw holes ensure a firm hold and optimal acoustic transmission to the headstock.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| 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 bushing |
| Button Dimensions (W x H x D) | 0.8 x 0.5 x 0.4 in (Butterbean), 0.7 x 0.5 x 0.2 in (all other buttons) |
| Mounting Hardware Included | 2 countersunk mounting screws (M2.2 x 0.43 in), 1 hexagonal press-in bushing (0.35 in outer diameter, 0.24 in inner diameter) |



















