Double joint socket A Socket designed with a dual structure in order to avoid any loss of air between the barrel and the top joint during the tuning process.

Available on：MK11,K10

YUKIO key This system is based on the lever principle. The weight of the A key action is reduced to improve the operability.

Available on：All models

D double tone hole A slightly stuffy D/A sound is cleared by adding a second tine hole under the left hand ring finger.

Available on：MK11,K10

F# & E mechanisms These mechanisms improve the homogeneity of the sound and the feeling of blowing.

Available on：MK11

Low pitch tuning key Actioned by the right hand thumb key, low F# & low E pitches are rectified.

Available on：MK11