We offer four levels of diatonic harmonicas in the J.A. Harmonicas line, which all come with the performance comb. The Basic and Advanced levels of customization feature intensive reed work that corresponds to a player’s technique and style—tone and use of bends and overbends, in particular. The Master level of customization features chromatic-capable reed work, and, for the Top of the line, reeds attached with screws and even better response in both regular blow/draw notes but also in bends and overbends. Custom cases are available and other options are available.