The mouthpiece of a trumpet instrument determines in part how the instrument sounds. A number of factors play a role in this: The diameter of the cup, the shape of the cup, the thickness of the rim and the bore. Choosing a mouthpiece remains personal and what works for one person may not work for another. You are always welcome to come and test mouthpieces in our stores. In our online shop you can check the stock and see where the mouthpiece is available.