Schaller GrandTune Single Guitar Tuning Machine

The Schaller GrandTune Single represents the ultimate combination of stylish vintage design, precise tuning response, and velvety smooth performance. Built as an open-gear tuner with a precision worm gear, it eliminates synthetic coatings to form a perfectly resonant unit on any instrument.
Featuring a 1:18 gear ratio, this machine head offers exceptional accuracy and longevity. Ultra-precise contact surfaces without polymer coatings deliver flawless stick-slip behavior without wear or aging, while permanently locked and sealed screw joints provide maintenance-free performance.
Engineered to standard instrument dimensions for straightforward replacement or new builds, the unit includes countersunk screw holes for solid anchoring and optimal acoustic transmission. Each solid-headstock configuration comes complete with mounting screws and a hexagonal press-in bushing.
Brand
Schaller
Model
GrandTune Single (GT-Single)
Product Type
Single Guitar Tuning Machine
Gear Ratio
1:18
Design
Open Gear
Product 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)
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)
Included Bushing Outer Diameter
0.35 in
Included Bushing Inner Diameter
0.24 in