Kawai K-300 upright piano polished white with ATX4 Silent system – Millennium III action, solid spruce soundboard
Kawai K-300 upright piano polished white with ATX4 Silent system – Millennium III action, solid spruce soundboard is backordered and will ship as soon as it is back in stock.
Description
Description
- Kawai K-300 ATX4, polished white
- Action: Millennium III
- Key covering: acrylic/phenolic
- Hammer core: mahogany
- Soundboard: solid spruce
- 5 back posts, reinforced construction
- 3 pedals, soft-fall fallboard
- AnyTimeX4 Silent system
- 256-note polyphony
- 90 voices
- Bluetooth Audio/MIDI
- Dimensions 122 x 149 x 61 cm, 227 kg
Kawai K-300 – Concert-Grade Sound, Playable at Any Time
The Kawai K-300 with ATX4 Silent system in an elegant polished white finish combines the mature tonal character of a classic upright piano with the freedom to practise silently through headphones at any time. For ambitious pianists who do not want to compromise, either when playing acoustically or when practising quietly.
Millennium III Action for Precise Control
The Millennium III action with components made of ABS-Carbon provides a fast, stable response from the quietest pianissimo to a powerful forte. Key coverings made of acrylic and phenolic offer a secure grip, while the mahogany hammer core with double-felted hammers and underfelt ensures a round, carrying tone. The solid, tapered spruce soundboard amplifies the sound naturally and fully.
AnyTimeX4 – Acoustic Piano and Digital Piano in One
With the AnyTimeX4 Silent system the acoustic sound can be muted at any time. The SK-EX Rendering sound generation and Harmonic Imaging XL provide a natural playing experience through headphones with 256-note polyphony and 90 voices. The Integrated Hammer Sensing System (IHSS) captures every hammer movement optically and transfers your touch sensitivity without delay. Via Bluetooth you connect your smartphone or tablet for audio and MIDI.
Your benefits at a glance:
- Concert-grade sound: Millennium III action and solid spruce soundboard for a full, round tonal character.
- Practise without restraint: the AnyTimeX4 Silent system mutes the acoustic sound – perfect for late practice sessions.
- Natural playing feel through headphones: 256-note polyphony and 90 voices thanks to SK-EX Rendering and Harmonic Imaging XL.
- Precise dynamic sensing: the optical IHSS sensor system transfers every nuance of touch without delay.
- Flexible connectivity: Bluetooth Audio/MIDI as well as USB and headphone connections for apps, recordings and practice software.
Technical specifications
| Model | Kawai K-300 ATX4 (AnyTimeX4) |
| Action | Millennium III (ABS-Carbon components) |
| Key covering | Acrylic (white keys) / phenolic (black keys) |
| Hammer core | Mahogany, T-stapled, double-felted with underfelt |
| Soundboard | Solid spruce, tapered |
| Speaking string length (bass) | 1,200 mm |
| Back posts | 5 |
| Pedals | 3 (soft, muffler (practice pedal), damper), soft-fall fallboard |
| Castors | Double castors (brass) |
| Sound generation (Silent system) | SK-EX Rendering & Harmonic Imaging XL |
| Polyphony | 256-note |
| Voices | 90 (plus 10 SK-EX Rendering characters) |
| Sensor system | Integrated Hammer Sensing System (IHSS), optical |
| Connections | 2x headphones (6.3 mm & 3.5 mm), MIDI In/Out, Line In/Out, USB to Host |
| Bluetooth | Version 4.1, MIDI & Audio (A2DP: SBC/AAC/aptX) |
| Dimensions (H x W x D) | 122 x 149 x 61 cm |
| Weight | 227 kg |
| Finish | Polished white |
Scope of delivery
1x Kawai K-300 ATX4 upright piano, Kawai SH-9 headphones, height-adjustable piano bench, mains cable, AC adapter PS-242, operating instructions, warranty card.
Who is it for
Ideal for households with different practice times: the full acoustic sound during the day, quiet playing through headphones in the evening – without compromising on playing feel.

Right of Withdrawal
Right of Withdrawal
That can happen to anyone: You buy something with a firm conviction and realize afterwards that the product you bought does not meet your expectations.
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Your Benefits with Us
Your Benefits with Us
- Over 70 years of experience
- Premium partner of top brands: find instruments from renowned manufacturers.
- Expert advice: our specialists help you make the right choice.
- Accessories available: discover matching accessories for your instrument.
- Repair service: make use of our professional repair service.
Warranty
Warranty
Your purchases at Musik-Ebert are covered by our 2-year Musik-Ebert warranty, which means we extend the manufacturer's warranty period (usually 12 months) to a full 24 months at our expense – at no additional cost or effort for you.
For products with a manufacturer's warranty of more than 2 years, the manufacturer's warranty naturally applies
14-Day Right of Return
We refund the full amount using the same payment method you used
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Payment & Security
Payment Methods
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