The J.A. Custom Amadeus Advanced has great response and tone. With a 3 part zigzag slide system the Amadeus is by far the loudest 12 hole chromatic harmonica on the market. The 3 part slide mechanism, gives the harmonica a much better slide action, but it also give the player better response and dynamics. It is assembled with screws for easy maintenance. The valves are modified for a much smoother action, and it features expert reed work, including a distinct embossing method.