Dynamic Mass Trumpet Mouthpieces

Bob Reeves Dynamic Mass Mouthpieces are built using a formula that determines how the mouthpiece is balanced from the cup depth. This includes the bore, backbore, and overall length.

They are not heavy mass mouthpieces but get their name from the fact that, as their overall length changes from model to model, their mass changes or is "Dynamic."

Dynamic Mass Mouthpieces behave differently than conventional mouthpieces. Our experience has shown that players often find it desirable to play Dynamic Mass Mouthpieces that are somewhat deeper than their usual mouthpiece.