New bell design - A new bell design contributes to optimum resistance for a powerful tonal core. The new design also enhances playability in the upper register.

Thinner valve casing and pistons, modified angle of branch tube (knuckle) - Thinner valve casing and pistons, as well as the modified angle of the branch tube (knuckle), result in improved response and provide the performer with an ideal blowing resistance.

Button on 1st slide - The button on the 1st slide is to fine-tune the blowing resistance for better control.

Improved Water Key - The height of the main slide water key gutter has been increased for optimum resistance, and the ends of the water key spring have been curled for improved response.

Case - New TRC-800E double case with a strap.