Small + chamber: The new S+ chamber is the next step in the evolution of the V16 alto mouthpiece. The new S+ chamber offers a richer depth of sound while keeping the free-blowing nature and projection that characterizes the V16 alto models. The S+ chamber accommodates more air providing the musician greater flexibility and a wider array of colors with which to work. The new S+ chamber takes the place of the current V16 alto S series mouthpieces. Listen to Baptiste Herbin play the new S+ below.