This mouthpiece does all that it claims. It blows freely and greatly improves the response of the 'notorious' D2 on Bass Sax. Tone can be whatever you want... just picture the sound and it is magically produced, cutting edge or smooth full tone. On Baritone it's a dream, the enlarged chamber gives a warm, slightly dark tone but, again, with the possibility of real power and cutting edge.
Worth every cent of the price!