Kawai K4

Kawai K4 Image

The K4 from Kawai can be thought of as a warm and fuzzy digital synthesizer. A sample-based digital synth, its sounds are those typically weird industrial type sounds that can still be useful in lo-fi, big-beat and trip hop music styles. The sounds are 16-bit preset PCM samples of acoustic instruments. However, unlike its predecessor the K1, the K4 adds a welcomed digital filter section. This truly makes the K4 more flexible, fun and useful for today's filter tweaking music effects!

Kawai K4r Image

The K4r is the eight output rackmount version which has all the same features except for the effects processor. Both feature 8-part multitimbrality which is great for stacking, splitting and layering sounds. The K4 will give you strange, new and unique sounds with plenty of flexibility and analog-style sound shaping and control at an affordable price. It is used by The Chemical Brothers and ATB.

Lookup Kawai K4 Prices

The link above will take you to an eBay search for this synth to see active listings with more images, specs and information. If you don't find it there, try looking in our forum marketplace. Our marketplace gets thousands of visits every week so make sure to check back often if you want to buy or sell a synth.

Related forum topics


Are you looking to buy or sell a Kawai K4? Post an ad in Gear For Sale or a request in Gear Wanted. For spare parts and repair services check out Gear Services & Other Goods. Our forums also has a Buyer’s Guide section where you can ask for advice on buying synthesizers.

53 Visitor comments
September 4, 2013 @ 3:57 am
some cool K4 presets


August 26, 2013 @ 2:15 pm
@el guapizimo thanx for link, will try to add new patches, because my battery is still OK and I just want to get some nice analog-sounding pads from internet :)
August 24, 2013 @ 12:27 pm
Help me , my k4 display is show the wrong language . it can not understand the text on display. When I open It show "[]YMHMCI" instead kawai k4 synthesizer.
How could it happen ? It need to replace battery ?
El Guapizimo
August 11, 2013 @ 7:02 pm
@lcaise: I'm also looking for info on how to do this. Neal Beard gives some info on his website (http://nealbeardahm.blogspot.com/2012/10/kawai-battery-replacement.html). I tried with no success yet.

@Pete: I had the same issue. It was a bad internal battery (CR2032). If you're handy it's pretty easy to replace. With the keyboard unplugged & face down carefully remove all screws & the back plate. Keep track of screw differences. Inside remove the metal pan noting screw locations. Battery is near power switch. *Changing the battery ditches your preset patches--requiring a restore. :(
July 24, 2013 @ 8:21 am
Hello, how to load patches availaible at internet? I can download patches but have no idea how to get new sounds at K4 :)

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  • Check Price
  • The link above will take you to an eBay search for this synth to see active listings. If you don't find it there, try looking in our forum marketplace or post a wanted classified.
  • Specifications
  • Polyphony - 16-voices, 8-part multitimbral
  • Oscillators - 16-Bit PCM digital synthesizer
  • Filter - Digital Dynamic Filter
  • Effects - Yes
  • Keyboard - 61 keys with velocity and aftertouch
  • Control - MIDI
  • Date Produced - 1989
  • Resources & Credits
  • Images from Synthony and

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