Available at Angkor Music Melbourne, the Schaller Rear Locking Machines M6-135 6-in-Line Black Chrome are premium locking guitar tuners designed for musicians who demand outstanding tuning stability, precision control, and professional-level reliability.

These tuners feature a rear locking mechanism that securely clamps the string inside the post, significantly reducing string slippage and eliminating the need for multiple wraps. This design allows for faster restringing, improved tuning accuracy, and greater stability during aggressive playing or tremolo use.

Finished in an elegant Black Chrome coating, the M6-135 tuners offer a modern, refined appearance while providing excellent resistance to wear and corrosion. The smooth, high-precision gear system ensures consistent, accurate tuning adjustments, making these machine heads a reliable upgrade for both stage and studio guitars.

Engineered to exacting standards, the Schaller M6-135 Rear Locking Machines deliver long-term durability, premium performance, and confidence-inspiring tuning for serious guitarists.

 

Schaller Rear Locking Machines 6 in Line Black Chrome M6-135

 

• 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

• 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.

 

Available in two housing versions:

 

1. Screw mount with 135° lug

2. Pin lock

Key Features

• Configuration: 6-in-line locking machine heads

• Model: Schaller M6-135 Rear Locking Machines

• Finish: Black Chrome

• Locking System: Rear locking mechanism for enhanced tuning stability

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

• Shaft Design: Staggered post heights for optimal string break angle

• Mounting Style: 135-degree screw tab configuration

• Construction: Precision-engineered metal housing with sealed lubrication

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

• Manufacturing Origin: Made in Germany

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FAQ Section

Q1: What guitars are these tuners suitable for?
A: These tuners are designed for electric guitars with a 6-in-line headstock configuration and standard tuner hole sizing.

Q2: What are the benefits of rear locking tuners?
A: Rear locking tuners secure the string at the post, reducing slippage, improving tuning stability, and speeding up string changes.

Q3: Can these tuners be used with tremolo systems?
A: Yes, the locking mechanism and precise gear ratio help maintain tuning stability when using tremolo systems.

Q4: Do these tuners allow accurate tuning adjustments?
A: Yes, the 1:18 gear ratio provides smooth and highly accurate tuning control.

Q5: Are these tuners suitable for professional musicians?
A: Absolutely. They are built with high-quality materials and German precision engineering for long-term professional use.