Siel DK600

$176.05 Price Tier: Budget

2 Critic Reviews

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Page last updated Jun 03, 2026

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We compare 600+ stores and found this item at 1 store. Prices updated June 3, 2026.

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$176.05 4 available Used

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Average Price: $176

Budget/Beginner

$500

$1501+

Price Tier

In the Synthesizers category, Siel DK600 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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Step into the world of vintage synthesis with the Siel DK600, a hidden gem from the mid-1980s that offers a rich palette of analog sounds. This classic synthesizer is cherished for its unique blend of digital control and analog warmth, allowing musicians to explore a wide range of soundscapes. With its six-voice polyphony, the DK600 provides the creative flexibility to craft lush pads, intricate leads, and punchy bass lines. Each voice is powered by dual digitally controlled oscillators, ensuring precise tuning and a robust sonic foundation.

The DK600 is equipped with a comprehensive set of features that cater to both live performers and studio producers. Its velocity-sensitive keyboard enhances expressiveness, capturing the nuances of your playing style. The synthesizer's intuitive interface, featuring a combination of sliders and buttons, allows for quick and efficient sound shaping. The inclusion of MIDI connectivity makes it easy to integrate the DK600 into modern setups, bridging the gap between vintage and contemporary music-making environments.

Whether you’re a seasoned synthesist or a curious newcomer, the Siel DK600 invites you to dive deep into the realms of analog synthesis with a touch of digital precision. Its characterful sound and versatile programming options make it a beloved choice for those seeking authentic vintage tones.

Key Features:

Six-voice polyphonic synthesizer
Dual digitally controlled oscillators per voice
Velocity-sensitive keyboard
Extensive modulation capabilities
MIDI connectivity for modern integration
Comprehensive on-board controls for sound shaping

Product specs

Brand	Siel
Model	DK600 Synthesizer
Finish	Black
Year	1980s
Categories	Analog Synths, Keyboard Synths
Analog / Digital	Analog
Key Size	Full Size
Keyboard Action	Synth Action
MIDI I/O	MIDI Input, MIDI Output, MIDI Through
Number of Keys	61 Keys
Polyphony	6 Voices

FAQs

Is the Siel DK600 synthesizer polyphonic or monophonic?: The Siel DK600 is a polyphonic synthesizer, offering 6-voice polyphony, which allows you to play up to six notes simultaneously.
What type of MIDI connectivity does the Siel DK600 offer?: The Siel DK600 includes MIDI Input, MIDI Output, and MIDI Through, making it compatible with various MIDI setups and allowing it to be easily integrated into your studio or live performance rig.
What kind of keyboard action does the Siel DK600 have?: The Siel DK600 features a synth action keyboard, which is known for its light, responsive feel, suitable for fast playing styles and expressive performance.
How many keys does the Siel DK600 synthesizer have?: The Siel DK600 is equipped with a full-size, 61-key keyboard, providing a wide range for playing complex musical compositions.
What are the standout features of the Siel DK600's sound engine?: The Siel DK600's analog sound engine is renowned for its rich, warm tones and versatile sound-shaping capabilities, making it ideal for a variety of musical genres.

Videos

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FatSynthDude

Siel Dk-600 Demo

FatSynthDude

Siel DK600 tech talk; a tough nut to crack

sounddoctorin

SIEL DK-600 SSM based DCO synth-1984

NYC Records

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 Siel DK600.

Build quality

0 0

Missing main board, knobs, and broken keys are common issues on non-functional units.
Source

Value and pricing

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Non-functional units valued around $100, primarily for parts.
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A complete, functioning DK600 can reach up to $1000 depending on buyer interest.
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Use cases and applications

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Some buyers seek non-functional units for parts to complete other DK600s.
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Setup and maintenance

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Owners suggest reseating all cable connections to potentially resolve unresponsive buttons and sound issues.
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It's suspected that aging DK600 units may suffer from leaky capacitors, affecting functionality.
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User experience

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Some users experience non-responsive program selection, indicating potential common issues with button functionality.
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Critic Reviews

Siel DK600 | Vintage Synth Explorer

vintagesynth.com

Siel's DK600 is an interesting mid-eighties polysynth with a distinct Italian flair. While its dual oscillators per voice provide a rich, thick sound, it's not as renowned as contemporaries like the Juno-106. With 12 oscillators, it offers stable DCOs that ensure consistent tuning, and its MIDI implementation is a plus for modern use. The layout is intuitive, perfect for hands-on programming. However, the accompanying EX600 Expander lacks programmability, relying on the DK600 or external sequencers. Overall, a capable synth with some limitations that might appeal to those seeking a unique vintage character.

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Full Review

Big K (ES Oct 84)

muzines.co.uk

The Siel DK600 synthesizer shines with its innovative improvements over the Opera 6, offering full polyphonic MIDI capabilities and touch sensitivity at an enticing price of under a grand. Its standout features include a robust interface and MIDI Expander, making it a versatile choice for musicians seeking multi-timbral sequencing. The keyboard's responsive touch controls and the clever MIDI key-split function offer impressive control over sound dynamics. However, while the included software is a great starting point for composers, its limitations, like the lack of overdubbing, may require users to look elsewhere for more advanced features. Overall, the Siel DK600 delivers exceptional value and should not be overlooked by serious music makers.

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Luis Dubuc

Keyboardist, Music Producer

The Secret Handshake

Verified via YouTube

best seen around 0:30 the synth in the back on it's side is a DK600 based on the grey buttons and switch, the red button and what is possible to see of the design.