JK "USA" Cornet Mouthpiece 3

The unique outer shape of the Exclusive series is the result of numerous tests which had the aim of elaborating the optimum weight of the mouthpiece. It has established itself as a distinctive...

The M-Series is an extension of the JK mouthpiece program, which takes into account current tonal developments. The gestures of the M-series therefore support realizations of style regarding an event...