Selmer Bass Clarinet Concept

Absolutely first rate mouthpiece which both improved ease of playing in the upper register as well as opening up the quality of sound overall.
It was suggested to me that the best way of upgrading my old Selmer Bundy bass clarinet would be to add in a Selmer m/p, and it certainly worked. The Concept model also makes doubling between saxophones and the bass clarinet much easier since the tip opening/lay is larger than normal.

Fast response, big sound, even in all registers, feels great in mouth. I just love this mouthpiece, ne of the best I've tried.