Lost motion is eliminated and smooth octave-key action is ensured by rounding the octave rocker ends and Fluororesin-coating the receiving sleeves they contact.

The seesaw linkage between the C# and Bb table keys facilitates faster, smoother fingering technique.

The additional slider mechanism between the C# and B table keys is a proprietary Yanagisawa design that allows smoother finger transitions between these notes.

This enhancement dampens sympathetic vibrations in the right-hand F# key, thus stabilizing the production of notes in the lower register.

Indented mother-of-pearl key touches are attractive, afford the fingertips a more natural fit and feel, and are less slippery than plastic touches when wet.

Primarily intended to add strength to the soldered interface between key posts and the body, the palm-key reinforcement plate and stack-post ribs also protect the body from damage should a post receive an accidental blow They also add mid-range resonance, acoustic depth and projection across all registers, and exceptional tonal stability.

Designed to make minimal point contact with the body, the thumb hook enables the instrument to resonate more freely while the brass thumb rest allows for smoother response and improved tonal balance.

For the utmost in precision and reliability, pointed pivot screws ensure that center arms or hinge rods are an exact fit.

Airtight pads facilitate balanced, leak-free play while quality waterproofing extends pad service life.

Blued-steel needle springs are more elastic than the stainless-steel variety, offer faster action and render a better command of difficult passages.

Dual arms prevent larger key cups from twisting or flexing under pressure and also improve durability.

The tri-point bell-bow brace ensures structural stability and rigidity and enhances resonance even at fortissimo levels.