Schaller GrandTune Single Guitar Tuning Machine
The Schaller GrandTune Single Guitar Tuning Machine combines elegant vintage design with precise tuning and ultra-smooth operation. Designed with open gear architecture, it delivers exceptional resonance and classic aesthetics for a variety of instruments.
Featuring an 18:1 gear ratio, this tuning machine provides remarkable accuracy, stability, and durability. Built without synthetic coatings, its precision-machined contact surfaces offer wear-free performance that maintains optimal tone and acoustic coupling.
Engineered to standard instrument dimensions for straightforward installation and replacement, each tuner includes countersunk screw holes and permanently sealed screw fittings to guarantee maintenance-free reliability.
| Brand | Schaller |
| Model | GrandTune Single (GT-Single) |
| Gear Ratio | 1:18 |
| Weight per Single Tuner | 0.63 oz (Koa), 0.67 oz (Pearloid), 0.71 oz (Galalith, Ebony), 0.74 oz (Snakewood), 0.88 oz (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 Screws Included | 2 countersunk screws per tuner (M2.2 x 11) |
| Press-In Bushing Specifications | Hexagonal bushing with 0.35 in outer diameter, 0.24 in inner diameter (for 0.24 in post) |
| Product Weight | 0.67 lb |



















