Jo Ral TPT-2A Aluminum Trumpet Bubble Mute Produces a distinctive sound with a louder "buzz" factor making it especially exciting for jazz musicians Create an exciting tonal quality that results in near-perfect intonation Crafted from aluminum, for a brighter tone, or from copper for a more mellow sound Designed and tested to perform evenly in all registers Unique cork pads and some feature felt caps to prevent scratching the instrument