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Kawai K4

Kawai K4
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Kawai K4
Reference : 111200
Kawai K4 – Fully Serviced – 100% Working – Classic 1989 Digital Synthesizer – Made in Japan – Warranty

For sale is a fully serviced and fully tested Kawai K4, manufactured in Japan in 1989.
Introduced in 1989, the Kawai K4 is a digital synthesizer that combines sampled waveforms, digital synthesis and a resonant digital filter within a flexible and relatively straightforward programming architecture.
Unlike many late-1980s digital synthesizers that focused primarily on realistic instrument emulations, the Kawai K4 is often appreciated for its synthetic character. Its combination of layered waveforms and resonant digital filtering allows the creation of sounds that can be warm and spacious, but also dark, metallic or haunting depending on programming.


16-voice polyphony
Multitimbral architecture
Up to 4 layers per sound
Digital oscillators (DCO)
Resonant digital filter (DCF)
Digital amplifier section (DCA)
LFO modulation
DCF and DCA modulation
Built-in digital effects
Made in Japan

The Kawai K4 combines a large library of sampled waveforms with a synthesis structure inspired by traditional subtractive synthesizers. Its DCO–DCF–DCA signal path makes programming relatively intuitive while providing a wide range of sound design possibilities.
Each patch can consist of up to four independent layers which may be edited individually or simultaneously, allowing the creation of complex textures, layered sounds and evolving timbres.

The Kawai K4 is often used for:
atmospheric pads
evolving textures
synthetic strings
dark digital soundscapes
industrial tones
experimental electronic sounds
cinematic textures

The Kawai K4 is often associated with darker digital textures, ranging from crystalline pads and synthetic strings to more atmospheric and evolving sounds. These characteristics helped make it a popular choice among musicians working in ambient, industrial and experimental electronic music.
The resonant digital filter significantly expands the range of available timbres and remains one of the instrument's most distinctive features.

The Kawai K4 continues to be of interest to musicians working in ambient, IDM, industrial, techno and experimental electronic music.
Artists and users include:
The Chemical Brothers, Venetian Snares and many more.

Condition:
Good cosmetic condition with only minor signs of use consistent with age (see photos – actual unit for sale).
Fully serviced, tested and restored in our workshop.

100% fully working
all keys and controls tested
display fully functional
sound engine fully functional
filter and modulation sections tested
outputs and MIDI tested
electronics serviced and calibrated
studio ready
Sold with 3 months warranty for complete peace of mind.

Why Buy a Fully Serviced Kawai K4?
Vintage digital synthesizers often require maintenance to ensure reliable operation.
Compared to unrestored units, this Kawai K4 benefits from:
professional servicing and full functional verification
improved long-term reliability
reduced risk of age-related electronic issues
tested controls, display and MIDI functionality
immediate studio readiness
continued interest in late-1980s Japanese digital synthesizers

A fully serviced and fully working Kawai K4, ready for studio, stage or collection.

Worldwide Shipping from France to :
France: 35 Euros
Europe(EU): 48 Euros
USA/Canada: 112 Euros
Australia and other country: 112 Euros
2026-12-31 499.00499.00 EUR
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