GrandTune Classic Hauser without guide bushings

GrandTune® - superior tuning machines

Without guide bushings (10mm), the baseplate is smooth on the back.

This variant GTC Hauser is only available with a 6mm posts with a hole in the middle for window head plates (slotted posts).

This variant is mainly intended for existing head plates with through holes 6mm; it does not have to be drilled out to 10mm. Vintage instruments often only have 6mm holes for the positioning posts. This variant GTC Hauser without guide bushings is intended for it.

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)

in detail

• 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!

Specifically composed gear torque for the classical guitar aficionado

Permanently locked, sealed and covered screw joints for zero degradation and maintenance-free performance

High-gloss fine beige or deep black string rollers

Optional Deluxe string rollers featuring state of the art ball bearings to prevent binding and improve performance. Deluxe string rollers available in fine grained galalith or piano lacquer string rollers

All GrandTune® Classic string rollers featuring brass-lined string holes.         

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 75g (button snakewood), 81g (Perloid white square, Perloid grey square, Ebony square), 82g (Galalith oval, Perloid grey ellipse, Acrylic black ellipse) per baseplate

scope of supply

8 mounting screws(M2,2x11); even if you choose posts for slotted headstock, no bushings are supplied. If necessary, order separately under Machine Heads/ Replacement Kits.

price for whole set

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“.

PDF-Datei Download » and button »10611062

Operating Instructions

Schaller-GT-guide (pdf-file)