Detail 01
Sound Adjustment Nut
It adjusts cord tension, changes reed vibration, and compensates for reed thickness.

Independent shopping perspective
Built for bass clarinet, the QUATTRO Silver A-Frame ligature uses fewer cords to give the reed more freedom to vibrate. Its Sound Adjustment Nut lets you alter cord tension and account for reed thickness; less tightening produces a darker sound and freer vibration. Fine Tuners adjust how the ligature responds to reed vibration, while the resizable design can be changed with a standard 1.5 mm hex wrench. An OmniCap and two sets of replaceable EZ-Pads are included.

Strong match
What matters in use
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 01
It adjusts cord tension, changes reed vibration, and compensates for reed thickness.
Detail 02
Ligature size can be adjusted with a standard 1.5 mm hex wrench.
Detail 03
They alter the ligature’s response to reed vibration, affecting sound focus and color.
Detail 04
The bridge pads are removable and replaceable; two sets are included.
Detail 05
It secures and protects the mouthpiece tip, reed, and mouthpiece rail, and is sized for a narrow case.
Final check
Product questions
Straight answers to the questions shoppers most often ask about this product.
Tightening it less makes the sound darker and lets the reed vibrate more.
Yes. It can be resized with a standard 1.5 mm hex wrench for current or future mouthpieces.
It includes an OmniCap and two sets of replaceable EZ-Pads.
They help prevent the cord from becoming displaced or deformed.
Reference
The complete catalog record, organized around the decisions musicians make when comparing gear.