I offer four levels of High-End J.A. Harmonicas, which are the most responsive of the J.A. Harmonicas line, in part because of the original Sjoeberg Comb. The High-End Basic and Advanced levels of customization feature the Sjoeberg Comb and intensive reed work that corresponds to a player’s technique and style—tone and use of bends and overbends, in particular. The High-End Master level of customization features the Sjoeberg Comb, chromatic-capable reed work, and, for the H-E Marine Band Master, cover plate modification and optimization. Custom cases are available.