Jo-Ral 4P Bass Trombone Practice Mute

The Jo-Ral 4P Bass Trombone Practice Mute creates an exciting tonal quality that results in near-perfect intonation. They are made of spun aluminum, and have been tested to perform evenly in all registers. Many models are also available with brass bottoms-offering a slightly warmer, moderately dark sound, or with copper bottoms which produce an even warmer, darker, rich sound.