Kawai K4

$14.22 Price Tier: Budget

3.5 (9)

1 Critic Review

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2 community setups

2 wishlisted

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Page last updated Jan 08, 2026

Pricing and availability

We compare 600+ stores and found this item at 1 store. Prices updated December 4, 2025.

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Price

$14.22

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Average Price: $14

Budget/Beginner

$500

$1501+

Price Tier

In the Synthesizers category, Kawai K4 is priced in the Budget/Beginner range. This is great gear to get started with or for creators on a budget.

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Description

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The Kawai K4 is a 61 key synthesizer manufactured in 1989 by Kawai. It contains several features beyond those offered on Kawai's K1, adding resonant filters and a DAC PCM wavetable. The K4 incorporated a new type of synthesis called Digital Multi Spectrum.

Videos

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synthtools

Kawai K4 16bit DIGITAL SYNTHESIZER - High Quality Sound-Demo

synthtools

KAWAI K4 | The Most Fascinating Soundscapes | HD DEMO

AnalogAudio1

Synth Stuff Ep. 27 - Kawai K4

tritonrecordings

Kawai K4, The dirty one

No Nag

Kawai K4 | Is This Digital Synth Underrated... or Just Bad?

Alamo Music Sound Lab

KAWAI K4 Factory sounds demo

RhythmicBliss

Kawai K4: 💸 $300 Forgotten Digital Dream Synth Might Be The Best For Lofi!

Vulture Culture

KAWAI K4 - Sounds DEMO (ANALOG SOUNDS)

Eaglechild

1989 Kawai K4 - Digital Resonant Filter (DCF) Demo

ChrisLody

Reviews

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Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Kawai K4.

Features and functionality

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Some Kawai K4 patches sound glitch-like by design, particularly "Junglelife," which uses resonance for a high-pitched sound akin to birds.
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Effects settings can significantly alter patch sounds, with effects slots ranging from reverb to distortion, and unique combinations available from 1-32.
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The built-in effects are noted for their ability to cut through a mix with a harsh, distinct presence, enhancing the instrument's industrial sound capabilities.
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The K4 is known for its "industrial" and "cold" sound, which was highly recommended for dance music due to its distinctive filter.
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Setup and maintenance

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Replacing the RAM battery is common; a CR 2032 battery is easily removable and replaceable, often needed for proper functioning.
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A mismatch of effects data between different patch imports can cause patches to sound incorrect or overly glitchy.
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Software and compatibility

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To restore original presets and effects, use the K4INT.SYX file with proper MIDI settings: RCC, RCV EXEC=ON, OMNI=OFF, RCV CH=1, and INTERNAL PROTECT=OFF.
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Using Sysex files from the Kawai US website or a Google Drive link can help resolve patch and effects issues effectively.
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User experience

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Owners appreciate the K4's ability to produce both lo-fi ambient pads and intense, high-resonance techno patches, ideal for late-80s/early-90s digital sounds.
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Edisyn offers a comprehensive K4/K4r patch editor, simplifying programming with support for single, multimode, drum, and effects patches.
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Value and pricing

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A user reported purchasing the Kawai K4 from a local guitar store for $150, highlighting its affordability for the unique sound it offers.
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Use cases and applications

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It was widely recommended by magazines in the past for those aiming to create dance music, attributed to its unique filter characteristics.
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Critic Reviews

Kawai K4 (SOS Jan 90)

muzines.co.uk

The Kawai K4 offers impressive sound versatility, from lush pads to sharp leads, thanks to its 256 high-quality waveforms and onboard effects. The 16-bit synth provides a clean, stunning audio quality that outshines its predecessor, the K1. While its multitimbral capabilities and ease of programming make it a strong contender against other synths like the Roland LA or Korg M1, there are some drawbacks. The separate power supply and flimsy key weights can be issues, and the drum section, though useful, may detract from its primary function as a synthesizer. Despite these minor flaws, the K4's synthesis power and value for money make it a compelling choice for musicians.

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3.5 out of 5

Based on 0 Reviews and 9 Ratings

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