Specifications:

Model: 4 Left 

Mounting: screw lug 90

Buttons: .22 (M4 Light-Button)

Surface: Chrome

Ratio: 1:20

Weight: 42g

Bore: 14.0mm

Item number: 10540201.22.70

Features:

• Ranging in functionality and size between the proven M4 and the open BM. Supplements the series with optimised weight data.
• A special female screw guarantees precise positioning and fixing of the shaft.
• All housings with guide and additional banjo bolt fixation. High gear ratio of 1:20 ensures a very precise tuning.
• All sealed tuners are lubricated with Schaller special grease for lifetime maintenance-free service.
• All parts are precision-crafted and surface-finished, the self-locking drive ensures an even, delicate and steady tuning.
• All string posts are made of high-grade brass and fitted into the housing with utmost precision, ensuring the best possible tuning accuracy and wear resistance.

The Schaller Bass Machines 4-in-L Chrome M4 90 Light tuning machines deliver exceptional tuning accuracy, smooth operation, and long-term reliability for bass players who demand professional performance.

Designed with Schaller’s renowned German engineering, these lightweight tuners reduce headstock mass while maintaining excellent balance and tuning stability. The classic chrome finish complements both modern and vintage bass guitars, making them an ideal upgrade or replacement for 4-in-L bass headstock configurations.

Perfect for touring musicians, studio players, and luthiers, Schaller M4 90 Light tuners ensure precise control and consistent tuning under all playing conditions.

Available now at Angkor Music Melbourne.

KEY FEATURES (VISIBLE)

• Brand: Schaller

• Model: M4 90 Light

• Instrument: Bass Guitar

• Configuration: 4-in-Line (4-in-L)

• Set: 4 Bass Tuning Machines

• Finish: Chrome

• Design: Lightweight construction for improved balance

• Performance: Smooth, precise, and stable tuning

• Build Quality: Precision German engineering

FAQ

Are these tuners suitable for all bass guitars?

These tuners are designed for bass guitars with a 4-in-L (four inline) headstock configuration. Always confirm compatibility before purchase.

What does “M4 90 Light” mean?

“M4” refers to Schaller’s bass tuner series, while “90 Light” indicates a lightweight design to reduce headstock weight and improve balance.

Do these tuners improve tuning stability?

Yes. Schaller bass tuners are known for smooth gear operation and excellent tuning stability, suitable for professional use.

Are these tuners difficult to install?

Installation is straightforward for most bass guitars and can be completed by an experienced player or qualified technician.

Are these genuine Schaller products?

Yes. All Schaller hardware sold by Angkor Music Shop Melbourne is 100% genuine.