Detail 01
Patented aerodynamic shape
Its airflow design is intended to support pitch accuracy and a free-blowing feel.

Independent shopping perspective
Built as a tenor trombone straight mute, the SM6378 combines hand-spun aluminum with an aerodynamic form intended to keep airflow moving without internal flat surfaces. Soulo positions that design around accurate pitch and a free-blowing response, addressing the resistance commonly associated with metal straight mutes. Its thin yet sturdy wall and low weight make it a practical metal option for players who want a traditional straight-mute sound without adding much weight to the bell.

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
Its airflow design is intended to support pitch accuracy and a free-blowing feel.
Detail 02
The mute uses aluminum for its straight-mute sound.
Detail 03
The wall design balances a light build with stated sturdiness.
Product questions
Straight answers to the questions shoppers most often ask about this product.
It is an aluminum straight mute for tenor trombone.
It is designed to improve pitch accuracy and provide a freer-blowing feel.
It is made from hand-spun aluminum.