Kawai Piano K Series: K-200 to K-800 at a Glance – Musik-Ebert Gmbh

The Kawai K Series is one of the most widely played families of upright pianos — five models from the compact entry point to a near-concert flagship, all built on the same technical idea. Anyone looking for a Kawai piano from the K Series faces exactly one question: which model suits my room, my playing level and my budget?

This overview places the K-200, K-300, K-500, K-600 and K-800 by height, tonal character and use. You can see at a glance where the real step up from one model to the next lies.

01What defines the Kawai K Series

All K models share the Millennium III action with ABS-Carbon components. Instead of wood in the moving parts of the keys, Kawai uses a carbon composite: lighter, dimensionally stable and unaffected by humidity. In practice this means fast, precise repetition and an action that holds its regulation for years.

The second common thread is the solid spruce soundboard. As the model number rises, the cabinet grows taller — and with it the string and soundboard area. That is exactly where the audible difference comes from: more height means more volume, longer sustain and a fuller bass.

Kawai K-200 Klavier schwarz poliert

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Kawai K-300 Klavier schwarz poliert

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02K-200 and K-300: entry point and sweet spot

The Kawai K-200 Klavier schwarz poliert, at around 114 cm, is the compact entry into the series. It fits into ordinary living rooms yet already brings the full Millennium III action and a mature tone — the right choice for the family whose child is starting in earnest, and for anyone keeping an eye on space and budget.

The Kawai K-300 Klavier schwarz poliert, at about 122 cm, is the most popular model in the series — and our sweet spot. The extra cabinet height over the K-200 brings a noticeably fuller tone and more headroom without overwhelming the room. For ambitious students, for the music school and for serious hobbyists, the K-300 is the piano that grows along the longest.

03K-500, K-600 and K-800: for higher demands

The Kawai K-500 Klavier schwarz poliert, at around 130 cm, adds tonal richness and dynamic range. It is the model for players who cover a wide repertoire and want an instrument with more tonal reserve and projection — the step from a good practice piano to a serious main instrument.

The Kawai K-600 Klavier schwarz poliert (around 134 cm) and the Kawai K-800 AS Klavier form the top of the series. Both use the full cabinet height for a long soundboard and a bass that comes close to a small grand. The K-800, with its more elaborate construction and an additional sostenuto pedal, sets the final point — made for professionals, advanced players and stages where an upright has to deliver the last bit of tone.

04The K Series in direct comparison

The table below sums up where the models stand — as orientation, not a rigid boundary. If you are torn between two models, the room usually decides: a larger piano needs a little more volume to unfold its sound.

The Kawai K Series at a glance
Model	Height (approx.)	Tonal character	Ideal for
K-200	114 cm	Compact, clear, balanced	Family, beginners, smaller rooms
K-300	122 cm	Full tone, ample reserve	School, ambitious players — the all-rounder
K-500	130 cm	More volume and dynamics	Advanced players, main instrument
K-600	134 cm	Deep bass, long sustain	Demanding players, entry to pro
K-800	134 cm	Top of the series, near-grand bass	Professionals, stage, highest demands

The K Series covers the full range of upright pianos — from the compact K-200 to the near-concert K-800. For most players the K-300 is the point where tone, size and value come together best. The best way to find which model suits your room is to hear it.

Frequently asked questions

Which Kawai K Series piano is the most popular?

The K-300. At around 122 cm it strikes the balance between full tone, ample tonal reserve and a size that fits most rooms — which makes it the most chosen model in the series and the obvious pick for school and ambitious hobbyists alike.

What is the Millennium III action with ABS-Carbon?

Kawai replaces wooden parts in the key mechanism with a carbon composite. The result is a lighter, faster and more stable action that is unaffected by humidity and holds its precise regulation for years.

Is the step up from the K-200 to the K-300 worth it?

For most players, yes. The extra height brings an audibly fuller tone and more headroom — the K-300 grows along longer as the playing level rises. The K-200 remains the right choice when space or budget are tighter.

How do the K-600 and K-800 differ?

Both, at around 134 cm, are the largest uprights in the series. The K-800 marks the top with a more elaborate construction and an additional sostenuto pedal — made for professionals and the highest demands. The K-600 offers almost the same tonal foundation and is the slightly more accessible entry to the pro range.