I have to ask the professionals for this since my trombone teacher doesn't know much about this. I play a King 4/4 4 piston valve BBb tuba, and this is my 3rd year of playing the instrument. I know that a mouthpiece does not immediately make up practice, and also that it will not immediately change things. I have two mouthpieces:
Bach 18
Conn Helleberg 7B
I notice that the Conn is better suited for the higher range, but for me personally, it sucks on the lower range
So these are my predicaments. I want a mouthpiece that is good-REALLY good on range, and has about the same tone quality as the Bach.
If you are wondering, this mouthpiece will be exclusively used for Region/All-state tryouts, and maybe my junior high school band if it fits.





