The new S+ chamberis the next step in the evolution of the V16 alto mouthpiece. It offers a richer depth of sound while keeping the free-blowing nature and projection that characterize 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 S+ chamber accommodates more air providing the musician greater flexibility and a wider array of colors with which to work.