The Schaller M6-135 Rear Locking Machines 3/3 – Black are professional-grade guitar tuning machines engineered for players who demand maximum tuning stability, fast string changes, and long-term reliability.

Featuring Schaller’s proven rear locking system, each string is securely clamped from the back of the tuning post, reducing slippage and enhancing tuning consistency. The 3/3 headstock configuration suits a wide range of electric guitars, while the sleek black finish provides a modern, understated look ideal for contemporary and performance-focused instruments.

Manufactured with Schaller’s renowned German precision engineering, the M6-135 locking tuners deliver smooth tuning action and dependable performance for studio, stage, and touring applications.

Available now from Angkor Music Shop Melbourne.

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.

Available in two housing versions:

1. Screw mount with 135° lug

2. Pin lock

• 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 

• Brand: Schaller

• Model: M6-135

• Instrument: Electric Guitar

• Configuration: 3/3 Headstock Layout

• Mounting: Rear locking tuning machines

• Finish: Black

• Locking System: Rear string locking for improved tuning stability

• Performance: Smooth, precise, and stable tuning

• Use Case: Fast string changes and reliable tuning

• Manufacturing: Precision German engineering

• Set: Set of 6 guitar tuners

FAQ SECTION 

What is a rear locking tuner?

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

Are these tuners suitable for professional use?

Yes. Schaller M6-135 locking tuners are widely used by professional musicians, touring artists, and studio players.

Do locking tuners really improve tuning stability?

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

Are these tuners suitable for stage and touring guitars?

Absolutely. They are designed for demanding live performance and frequent string changes.

Are these genuine Schaller tuning machines?

Yes. All Schaller tuning machines supplied by Angkor Music Shop Melbourne are 100% genuine.