Official Schaller Onlineshop

GrandTune single and ukuleles

From €17.15 *

Prices incl. 19% VAT (only European Union) plus shipping costs

Delivery time approx. 10 days

Please configure your desired product in the order, starting from the top with the color.





Info to posts with images
We hereby declare that cancellation law shall not apply to contracts pertaining to the delivery of goods which are not ready-made like these, nor shall it apply to products which are manufactured according to the customers express wishes or specially adapted to the personal needs of the consumer and single tuners.
I have read and understood the information/ links in red and I know what a left and a right machine head/tuner is and I know that the length of the post is measured according to the pictures shown here from the bottom of the housing to the center of the hole for the strings.
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GrandTune® - superior tuning machines With its cutting edge Velvet-Tec* technology the all... more

GrandTune® - superior tuning machines

With its cutting edge Velvet-Tec* technology the all new Schaller GrandTune® is the ultimate combination of tasteful design and velvet-smooth feel and touch.

Due to its revolutionary conception the GrandTune® offers a precision and longevity second to none. The avoidance of synthetic coatings makes GrandTune® a perfectly resonating entity. With its wear-free architecture GrandTune® is bound to last and shine as long as your precious guitars ever will and far beyond! Experience Velvet-Tec and find out how sound quality, tuning stability and performance define GrandTune® as the Superior Tuning Machine.

(*scientific analysis supported by Fraunhofer Institutes and others)

  • 1:18 gear ratio supports precise and velvet- smooth tuning.
  • Hyper- accurate gear joints and fittings without polymer coatings present perfect stick-slip-performance and zero wear and slackening. GrandTune® features permanently locked, sealed and covered screw joints for zero degradation and maintainance-free performance. New formula bell brass gearwheels guarantee velvet-smooth feel and touch Standard dimensions for easy installation.
  • Countersunk screw holes for solid fit and perfect sound coupling.

GrandTune® the most advanced and musical machine head ever built!


Please note:

Please use always the original GrandTune bushings. The inner diameter is worked exactly for the 6mm posts and gives the worm gear an exact alignment. Bushings with a larger inner diameter inevitably destroy the worm gear over time.

A few words about ball bearings

Our GrandTune Classic deluxe string rollers feature special ball bearings for accurate, low-friction and noiseless performance. With the ball bearings diameter of 10.0 mm and the string rollers diameter of 9.8 mm they guarantee the shafts to run free and unobstructed inside the headstock bore.

It is important to note that the deluxe string rollers ball bearings do not improve the GrandTune Classic tuners performance itself. Which is not necessary anyway. They rather help avoiding a common problem with classical guitar tuners and the contact of the rollers inside the headstock. The Deluxe string rollers ball bearings effectively cure increased friction and resistance between shaft and wood often resulting in crackling and creaking noises whenever the tuners are turned.

GrandTune® - hypertech tuning - vintage design

GrandTune® - grand class design & performances


technical specification

gear ratio 1:18, weight: 18g (button Koa), 19g (Perloid, Polybone), 20g (Galalith, Ebony), 21g (Snakewood, KeyStone), 25g (Butterbean) per single tuner

Dimensions buttons: width 17.6, height 13.7 and thickness 6.1mm.

The press-in bushings have an outer diameter of 8.8mm, for this a reamer e.g. from Stewart MacDonald ( can be used: peghead bushing reamer # 2061 (8.33mm).

You can also get a drilling template from StewMac (tuner drill jig # 4858).


scope of supply

6 press-in bushings outer diameter 8,8mm (only for posts for solid headstock), 12 mounting screws.

For existing drill holes 10mm please order press-in bushings with 10mm outer diameter separately under Machine Heads/ Replacement Kits.


technical drawings (without engagement)

Our technical drawings show just a sample of buttons and posts. You`ll find the technical details of our posts by using the configurator chapter „posts“.

TZ_1051 (pdf-file)



Operating Instructions

Schaller-GT-guide (pdf-file)