The Schaller Rear Locking 3+3 M6-180 Machine Heads – Gold are high-end locking guitar tuners designed for players who demand maximum tuning stability, fast string changes, and premium aesthetics.

Featuring Schaller’s advanced rear locking system, each string is securely clamped from the back of the tuning post, virtually eliminating string slippage and improving tuning consistency. The 3+3 headstock configuration suits many electric guitars, while the refined gold finish adds a luxurious, professional appearance.

Manufactured with Schaller’s renowned German precision engineering, the M6-180 tuners provide smooth tuning action, long-term durability, and dependable performance for studio recording, live performance, and touring use.

Available as a set of 6 from Angkor Music Shop Melbourne.

Schaller Rearlocking 3 + 3 M6-180 Machine heads - Gold Set of 6

: With its 1:18 gear ratio, it ensures unrivaled precision and outstanding tuning comfort. It is available in an impressive variety of designs and details.

The original M6 set a new global standard for closed tuners in 1966. Since 2017, the M6 has offered numerous improvements and innovations without losing its unique aura.

Special features

• Their perfect functionality combined with an improved gear ratio of 1:18 ensures a precise and velvety smooth tuning process.
• All parts are CNC-machined with high precision, surface-finished and guarantee smooth, sensitive and stable tuning thanks to the self-locking drive. 
• We manufacture all posts from high-quality brass, they are precisely fitted into the housing and guarantee the highest possible tuning stability and freedom from wear. 
• The innovative M6 step-washer guarantees problem-free assembly and permanently solid centering of the post.
• All closed mechanisms are permanently lubricated with Schaller special grease and are therefore absolutely maintenance-free.

Advantages of the M6-step washers

This Schaller innovation facilitates the installation of the M6 machine head and provides additional protection for the perfect function and longevity of your tuning machine head. The additional step at the bottom of the M6 washer (with a diameter of 10 mm) reliably centers the string post via the threaded bushing and eliminates the need for a stepped hole in the headstock. This function eliminates the tilting moment and takes the pressure off both the post and the fixing screw on the back.

Note

1. The new M6 180 has slightly smaller housing dimension as its predecessor model, but can be easily replaced without any modifications: The "footprint" of the old original housing (slightly larger) may not be complete covered.
2. In the configurator, you can choose between our two locking models: Locking (on the housing) or TopLocking (top of post).
3. Fitting the TopLocking model: Please unscrew the black, knurled TopLocking sleeve as far as it will go and then pull it off. Install the mechanism on the headstock, press the TopLocking sleeve back onto the post and screw tight.

Technical specifications

• Gear ratio: 1:18
• Weight each single tuner with button (small/large): Metal (36 g/38 g), Perloid (30 g/31 g), Ebony (30 g/31 g) including threaded bushing

• Drill hole button: diameter 4.2 mm with driving surface 3.6 mm

Scope of supply

• 6 x threaded bushings (for item selection "posts for solid headstock 14,65", these are not required and not included in scope of delivery)
• 6 x step washers
• 6 x mounting screws: M 2.2 x 9.5
• Only the locking model (staggered) is supplied with 3 x 19.5 mm and 3 x 21.0 mm posts (see illustration in the configurator).

KEY FEATURES 

• Brand: Schaller

• Model: M6-180

• Instrument: Electric Guitar

• Configuration: 3+3 Headstock Layout

• Mounting: Rear locking machine heads

• Finish: Gold

• Locking System: Rear string locking for enhanced tuning stability

• Performance: Smooth, precise, and reliable tuning

• Use Case: Fast string changes and stable tuning

• Manufacturing: Precision German engineering

• Set: Set of 6 guitar machine heads

FAQ SECTION 

What is a rear locking machine head?

A rear locking machine head clamps the string from the back of the tuning post, reducing slippage and improving tuning stability.

Are these tuners suitable for professional guitars?

Yes. Schaller M6-180 locking tuners are widely used by professional musicians and touring artists.

Do locking tuners help with tuning stability?

Yes. Locking tuners minimise string movement, helping guitars stay in tune longer.

Are these tuners suitable for frequent string changes?

Absolutely. The rear locking system allows quick and secure string changes.

Are these genuine Schaller machine heads?

Yes. All Schaller machine heads supplied by Angkor Music Shop Melbourne are 100% genuine.