The difference between the “Profile 88″ and traditional mouthpieces is in the exterior angle of the beak. The Profile 88 has a longer, lower slope than most traditional mouthpieces making it more comfortable for some players.
The M30 is the same as the 5RV with a larger tip opening and a longer facing which guarantees flexibility and roundness. This mouthpiece has an exceptional quality of sound.
Fantastic clarinet mouthpiece for a serious player!