The J.A. Custom Amadeus Top of the line has incredible response and tone. It features the most extensive and advanced reed work possible. Every reed responds to the same small air pressure and the tuning lasts much longer than on a stock harmonica. With a 3 part cross slide system the Amadeus is by far the loudest 12 hole chromatic harmonica on the market. The case is hand made from high quality Swedish leather, engraved with the customers initials. Valves are modified for a much smoother action. It also feature its own unique serial number and the comb is engraved with the customers initials.