top of page
Unity B4L

Unity Mouthpieces: the latest generation of Monette mouthpieces


Size Comparison: Monette B4L S1 and original B4L, conventional 1-1/2 or 2 rim with Bach 'E' or Schilke 'A' cup depth


For many years the B4L size has been the go-to lead mouthpiece for players who use our B2 and B4 sizes as their main mouthpiece and are comfortable using a shallow cup depth. This new version of the B4L size has an even easier upper register, lightning fast response, and a huge resonant sound. The Unity B4L has been a favorite among many of our play testers!


*If you have never used the Monette B4L rim before, we would first recommend the Unity DM-4L with its newer 'DM' rim design. But players who want the familiarity of the original B4L rim will love the Unity B4L.  



The Unity B4L is usually made in the lightweight Unity body. It can also be made in the extra-lightweight Unity body for players who prefer an even brighter sound. 


Plating & Finish:

Unity mouthpieces have a 24k brushed gold finish

Unity B4L

  • Monette mouthpieces are made-to-order and usually will not be available as ready-made stock. The standard estimated wait time to have a trumpet mouthpiece made is approximately 6-8 weeks. Unity mouthpieces for Bb and C trumpet are often available within a shorter wait time. Uncommon sizes can involve a longer wait time. The exact wait time is unpredictable, as it is affected by many variables. We cannot guarantee an exact completion date or shipping date in advance. Thank you very much for your patience while you are waiting for your mouthpiece to be made for you.

bottom of page