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Unity BL4

Unity Mouthpieces: the latest generation of Monette mouthpieces


Size Comparison: Monette. BL4 S6 and original BL4, conventional 11A


This size was originally designed for Patrick Hession many years ago. It has been used by lead players around the world who love its combination of comfort, big sound, and ease in the extreme upper register. The new Unity BL4 provides even better projection, more secure slotting, and more consistent resistance up to and above double C.


You can hear Patrick playing his new Unity BL4 in a video on the Unity Mouthpieces page!



The Unity BL4 is usually made in the extra-lightweight Unity body for an extremely vibrant lead sound. It can also be made in the lightweight Unity body for some extra stability and projection.


Plating & Finish:

Unity mouthpieces can be plated in 24k brushed gold or bright silver.

Unity BL4

PriceFrom $385.00
  • 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.

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