The Concert Mouthpieces were designed for the player that needed a broad tone with enhanced projection, even timbre, and great intonation throughout all registers.
The Pro-Line represents the darkest tone mouthpiece models we offer. This series features 3 rims A B and C. and 3 cup depths. The 'A' rim is our largest rim diameter most similar to a Bach 1. The 'B' rim is slightly smaller most similar to a Bach 1 1/4 C. The 'C' rim being the smallest most similar to a Bach 3C rim. As with all Marcinkiewicz mouthpieces, the cups are number from deep to shallow. (#1 being the deepest and #5 the shallowest)