Each Artisan D/Eb trumpet is made with two one-piece hand-hammered tunable yellow brass bells with flat rims and special acoustic treatment in D and Eb. This process results in a beautiful Bach Stradivarius sound with a focused core and a broader range of color. The ADE190S comes with two complete sets of valve slides for both D and Eb. The two-piece valve construction with nickel balusters and brass casings harkens back to the construction techniques used by Vincent Bach when making classic Bach trumpets in New York City and Mount Vernon, New York. Monel pistons along with two sets of brass and plastic valve guides offer the player a choice in response and feel. The 1st slide split ring, enhanced radius ferrules, sculpted bracing, and artistic engraving are all key contributors to the unique response while providing an unparalleled elegance in appearance. The silver-plate finish of the ADE190S provides a controlled brilliance to the overall sound. These features combined with a .450" bore result in a beautiful and focused sound with superb intonation. Whether playing the Haydn concerto or soaring over an orchestra, the ADE190S D/Eb trumpet is the perfect choice.