Introducing the newest addition to the Soulo Mutes! This straight mute is perfect for quiet lyrical passages. Just like the rest of the Soulo mutes it plays in tune, it is very easy on the chops and it has a great sound. This is the first Adjustable straight mute on the market! The adjustable black â€œshaftâ€ can be moved closer or further from the bell in order to find the perfect spot in terms of sound, volume and back pressure.