Description

Kawai K 400 Upright Piano

Big Upright Performance. Grand Piano Thinking.

The Kawai K 400 is not a basic upright. It is engineered like a small grand piano in an upright cabinet.

With its Millennium III action, longer key sticks, tapered solid spruce soundboard, and grand style cabinet details, the K 400 delivers control, power, and projection that serious players immediately notice.

At Worldwide Piano in Edison, NJ, we recommend the K 400 to advancing students, teachers, and adult pianists who want long term musical growth without moving into a grand piano footprint.

Call for current availability and pricing.

What Makes the Kawai K 400 Different

Millennium III Upright Action

The K 400 features Kawai’s Millennium III action, built with ABS Carbon composite components.

Why this matters:

• Faster repetition and improved control

• Greater stability through humidity changes

• Lighter but stronger action parts

• Long term consistency in touch

This is one of the most important upgrades over entry level uprights. The action feels precise, stable, and predictable, which allows players to shape tone and dynamics with confidence.

Longer Key Sticks for Better Leverage

The K 400 uses extended key length compared to smaller uprights.

Why that matters:

• More even control from front to back of the key

• Improved dynamic range

• Smoother pianissimo playing

• Less “top heavy” feeling

This gives the K 400 a more grand like sense of balance in the hands.

Tapered Solid Spruce Soundboard

The K 400 features a tapered solid spruce soundboard, carefully shaped to enhance tonal response.

Benefits:

• Greater resonance

• Fuller bass response

• Clear singing treble

• More dynamic projection

The tapering allows the soundboard to vibrate more freely. The result is tone that opens up as you lean into the instrument.

Grand Piano Style Fallboard

Unlike many uprights in this class, the K 400 includes a grand piano style fallboard.

Why it matters:

• Smooth closing design

• Cleaner aesthetic

• A subtle but refined grand piano feel

It feels intentional and elegant, not like an afterthought.

Larger Music Rack

The expanded music rack accommodates larger scores and heavier music books.

Benefits:

• Perfect for advanced classical literature

• Ideal for teaching studios

• Supports tablets and thick method books

It is a practical feature that serious players appreciate immediately.

Solid Construction for Long Term Stability

The K 400 is built with:

• Multi laminated hardwood back posts

• Reinforced frame design

• Precision engineered scale

This ensures structural integrity and tonal stability for decades.

Tonal Character

The Kawai K 400 offers:

• A warm but clear tonal profile

• Strong projection without harshness

• Defined bass presence for an upright

• Singing midrange

• Controlled, bell like treble

It is powerful enough for a teaching studio, yet refined enough for expressive home performance.

Ideal For

• Advancing students

• Adult returning players

• Teachers needing a professional upright

• Families upgrading from a console

• Churches or smaller performance spaces

If you want a serious upright that supports growth rather than limits it, the K 400 is a natural choice.

Specifications

Height: 48 inches

Action: Millennium III with ABS Carbon components

Soundboard: Tapered solid spruce

Key Length: Extended for improved leverage

Cabinet: Grand style fallboard

Music Rack: Larger performance style design

Available finishes may include Polished Ebony and select specialty finishes.

Why Buy Your Kawai K 400 from Worldwide Piano

We are not a general music store. We are piano focused.

• Over 150 pianos on display

• Side by side comparison with other Kawai models

• Honest guidance between K 300, K 400, and K 500

• Professional delivery coordination

• Long term support

Come play the K 400 in our Edison, NJ showroom and feel the difference for yourself