Kawai K-300 Piano: What It's Worth in 2026, Prices & Listings

Size: 48" (122 cm) professional upright
Made: The K-3 became the K-300 in 2014; in production since

The Kawai K-300 is Kawai's 48-inch professional upright and the most direct rival to the Yamaha U1. It uses the Millennium III action with carbon-reinforced components, and it has won institutional and teacher loyalty for a warm tone and a fast, even touch.

Used K-300s are relatively young because the model is recent; many on the market are dealer demos or lightly used home pianos, which keeps condition high and prices firm.

What a Kawai K-300 is worth in 2026

Median asking

$11,500

Lowest

$8,299

Highest

$13,206

Live asking prices from 6 priced Kawai K-300 listings on US Piano Connection right now, refreshed hourly. Dealer asking prices include prep work, warranty and delivery; a private sale realistically brings less than the dealer median for an ordinary example.

K-300s hold value well because they are recent and in demand. Dealer-sold examples with warranty set the ceiling; see the live figures above.

K-300 asking price by decade built
Decade	Listings	Median	Range
2020s	2	$11,499	$9,999–$12,999

Get a free instant appraisal for your K-300 or compare Kawai against every major brand.

What to know about the Kawai K-300

The K-300 is the renamed K-3 (2014); earlier K-3s are essentially the same piano.
Aures and AnyTime (silent/hybrid) variants add electronics and price higher.
Built in Japan.
Compare directly with the Yamaha U1; many buyers prefer the Kawai's warmth, others the Yamaha's clarity.