Available at Angkor Music Melbourne, the Schaller M6 Rear Locking Machines 6 Left in Line – One Locating Pin – Gold are premium locking guitar tuners designed for musicians who demand professional tuning stability, precision, and elegant aesthetics.

These machine heads feature Schaller’s trusted rear locking system, securely clamping the string at the post to reduce slippage and eliminate unnecessary string wraps. This results in quicker string changes, improved tuning accuracy, and stable performance during demanding playing conditions, including tremolo use.

The one locating pin design allows for clean, secure installation while maintaining a refined headstock appearance. Finished in a luxurious Gold plating, these tuners add a classic, high-end look while offering excellent resistance to wear and corrosion.

With smooth, high-ratio gearing and precision-engineered construction, the Schaller M6 Rear Locking Machines are an ideal upgrade for professional instruments, delivering reliable performance on stage, in the studio, and at home.

With this tuner the string is locked in the shaft by a handy knurled nut located on the rear of the peghead, resulting in a low overall height. 6-in-line models with two different shaft lengths (staggered). Gear ratio 1:16.

Locating pin model - center of left  side as you look at the top of tuner

• Schaller was the world's first manufacturer who developed the locking tuner and had it patented more than 20 years ago!

• Works like a traditional machine head, but the string needn't be "wound up" any more. Instead it is inserted into the cam hole with the clamp screw loosened, locked with the clamp screw and can then be tuned at once.

• This makes changing your strings a lot faster and easier.

• Only this patented locking system based on the ball socket principle prevents reliably from string notching and breakage.

• The string will not be wound onto the shaft any more. So it will stay in tune extremely well, perfect for non-locking tremolo systems.

• With all its benefits the Schaller locking tuner is THE benchmark in the guitar sector!

Key Features

• Configuration: 6 left-in-line locking machine heads

• Model: Schaller M6 Rear Locking Machines

• Finish: Gold

• Locking System: Rear locking mechanism for enhanced tuning stability

• Mounting Style: One locating pin design

• Gear Ratio: 1:18 for smooth and precise tuning control

• Construction: Precision-engineered metal housing with sealed lubrication

• Orientation: Left-side configuration

• Application: Electric guitars with 6-in-line headstocks

• Manufacturing Origin: Made in Germany

FAQ Section

Q1: What does “one locating pin” mean?
A: The one locating pin design helps align the tuner securely on the headstock while maintaining a clean and minimal mounting appearance.

Q2: What are the advantages of rear locking tuners?
A: Rear locking tuners reduce string slippage, improve tuning stability, and make string changes faster by clamping the string at the post.

Q3: Are these tuners suitable for tremolo-equipped guitars?
A: Yes, the locking mechanism and precise gear ratio help maintain tuning stability when using tremolo systems.

Q4: Are these tuners suitable for professional musicians?
A: Absolutely. They are built with German precision engineering for reliable, long-term professional use.

Q5: Will these tuners fit standard 6-in-line headstocks?
A: These tuners are designed for guitars with 6-in-line headstocks that support left-side orientation and locating pin mounting.